NUPL is over now, some of my nominations are more or less based on Pokemon's usage and effectiveness during this tour. I know I'm going to bring some huge rises, but I think the value and the impact of some Pokemon in the metagame are not well reflected in this current VR:
Rises :
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A -> A+ : Gardevoir is an extremely versatile Pokemon and proves to be effective at everything she does. She's the most powerful Psychic-type available and has a bunch of useful tools for offensive and defensive tasks alike. The 3 Attack set hits everything hard thanks to her coverage, including Skuntank which has to be wary of what could fill the 4th movesolt (WoW, Destiny Bond, Sub...). As a defensive Pokemon one could think that she's outclassed by Hypno, but that's far from being the case since she's also able to check Medicham with a 252 / 252 spread as well as doing much better against things like Tauros (still not a very reliable DE switch-in though) and Ninetales by copying their abilities with Trace, which is also very helpful for purpose like revenge killing a Chlorophyll / Swift Swim sweeper or trapping a Magneton. Morever she's not as passive as Hypno due to her stronger Psychic and her access to WoW, which means that Skuntank cannot trap her as easily. Scarf, SubCM, Dual Screens... Gardevoir has just a plenty of alternative and her overall effectiveness makes her worthy to join the other offensive threats in A+, I think she could have gone straight up to S- if she wasn't slower than Skuntank.
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B -> A- / A : Cradily saw a very good amount of usage, and for good reasons. It's probably the best answer to Tauros and Manectric available thanks to its typing and excellent stat spread which also allows it to check a bunch of other dangerous Pokemon like Haunter, Shiftry and Drifblim. Being able to set-up Rocks and to heal itself reliably is a very good feature, but Curse variants can also prove to be very scary for some teams (I think I saw it sweeping one in NUPL). Overall, it's something to take in count when teambuilding because you'll want to be able to break through Cradily reliably. Fortunately it has some exploitable weaknesses but it's still a very good all around wall nonetheless.
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B -> A : I think that Grumpig should be in the same rank as Hypno at the very least due to how splashable it is. Hypno is a soft Fire-Check at best since it gets mauled by SD / DD Charizard, can't switch on Magmortar Fire Blast if SR are there even with Protect, can't stand two Eruptions from Specs Typhlosion and will be quickly overpowered by NP Jynx and Ninetales, whereas Grumpig fares better against all of them thanks to Thick Fat (assuming Sleep Clause is activated in the case of Jynx). It's true that the lack of Wish really hurts Grumpig, especially against things like Medicham. However, due to its added resistances, Grumpig doesn't need to heal itself against most of the metagame like Hypno does, and the added power and freedom for moveslots makes Grumpig less of an offensive liability and thus not as powerless against Skuntank, although it's still a big concern.
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B- -> B+ / A- : Camerupt seems to be mostly known as TR Sweeper, but in my opinion it's best set is the specially defensive tank. Camerupt is a full counter to Electrics unless they carry Hidden Power Water, which is unlikely. It also makes a fine Fire check, although it's unfortunate that it cannot reliably face Zard as you'll probably want SR / Lava Plume / Earth Power / Explosion most of the time and because Air Slash 3HKOs whereas Focus Blast from Magmortar does a lot too. On the offensive side, it's very nice to have a Fire Type that pressures Regirock and can boom on Water-types and other Special walls, which means Camerupt is still threatening offensively even if its meant to take hits instead.
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B- -> B : Despite the existence of Floatzel, Sharpedo has been used more from what I've seen, and not only as a suicide lead (which works very well btw). Although the loss of Speed is certainly detrimental, the increased firepower and the Dark STAB really makes a lot of difference in a tier with Slowking being this common. It's coverage (which includes Zen Headbutt for Poliwrath) and STAB Crunch makes Sharpedo a much more dangerous Pokemon for bulky teams than Floatzel and leaves it with no true counter. Its place in NU is perfectly justified in my opinion.
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C+ -> B : Rapidash is a cool offensive Fire-check. Unlike Ninetales it's faster than Zard, Typh and the aformentionned fox. Being physically oriented allows it to pressure team that relies on Special walls like Lickilicky to check the usual Fire types and it's access to Megahorn is a blessing against Slowking and Grumpig. Unfortunately, it faces 4MSS since you would typically want all of Morning Sun, Flare Blitz, Megahorn, Double-Edge / Return (otherwise you can't check opposing Fire types) and WoW / Toxic so you're not completely unable to scratch Regirock.
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C -> B : If Missy really was C material I doubt she would have seen NUPL usage in serious teams. Even though she's still frail she doesn't die as easily as Haunter and she doesn't have a Psychic weakness, making her a better stallbreaker and probably the best anti-spinner in NU. Her speed isn't incredible by any means but she's fatser than Skuntank, Medicham, Gardevoir and Hirmonchan so she can either burn or hit them with Shadow Ball first. Levitate + Ghost Type gives her the same perks than Haunter, which means she can pivot on Tauros, Sandslash, Hitmonchan...
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C- -> B / B+ : I think I saw Flareon a couple of time in NUPL, but anyway it's clearly above anything else in C-. The Stealth Rock weakness is certainly a problem, but Flareon still remains one of the best Fire check in the tier and I think the best one with a reliable recovery move, which is huge. It's also a good answer to Jynx and most special attackers in general, especially since unlike most other special walls, it doesn't carry a weakness to Fighting, exploitable by anything with Focus Blast, or to Pursuit. It's also one of the few good phazers in the tier.
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Unranked -> B+ / A- : In my opinion Sableye is a much better defensive Ghost type than Dusclops, which doesn't have a reliable recovery move, takes a lot from Medicham Zen Headbutt, is weak to Pursuit, can't check Psychic types, can't work as a Stall breaker... All these reasons justify why Sableye is a solid Pokemon in NU. It's main problem comes from its horrible stats which prevents it from checking everything it wants at the same time on both sides, but being able to check Tauros and Medicham as the same time is huge.
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D- -> C+ : Very similar to Sableye : its stats are laughable, but its typing is highly valuable. With an appropriate spread, you can check all of Tauros, Jynx, Haunter, Gardevoir, Shiftry... at the same time. It has some obvious flaws though, like the Fire weakness, utter passivity and being dead if Magneton shows up, but the ability to check this number of threats in one slot is something desirable.
Drops:
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A- -> B+/ B : Vileplume lacks real defensive utility and barely checks anything aside from Poliwrath, Shiftry and maybe Floatzel. The Sunny Day variant is an inferior Victreebel that sets-up more easily and can make use of its best STAB only if Sun is up, it struggles against all special walls if it doesn't put them asleep and is outspeeded by most Scarfer even when Sun is up. Right now I think that the offensive variant with both Sleep Powder and Synthesis is its best set right now, but the lack of speed, power and crippling weaknesses still prevent Vileplume from sharing the same rank as things like Drifblim.
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A- -> B+ : Even though I think that Meganium is a better defensive Pokemon that Vileplume due to the better bulk, lack of Psychic weakness and the added Ground resistance, it still doesn't bring much help against the most metagame defining offensive threats. On top of that it's really passive and thus allows free switch-ins for a bunch of dangerous stuff. Cradily's typing and access to SR gives Meganium some serious competition as a defensive Grass Type.
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B -> B- : I think that Rain is an inconsistent playstyle due to the number of counterplay you might bring even without thinking about it. Despite its access to Shadow Ball, Gorebyss is unable to 2HKO most Slowking. Special walls like Lickilicky can just spam Wish and Protect until Rain fades, Gardevoir can trace Swift Swim and revenge kill it afterwards, most Scarfer will outspeed it, and almost every other Water-types are troublesome as well (Politoed, Poliwrath, Lapras, Quagsire, mantine, Floatzel and Golduck).
I agree with every other nominations made above, except for some Mons which I think should stay where they are : Dodrio ( brutal against teams lacking Regirock or to a lesser extent Solrock, Rhydon, Golem or Probopass), Ninetales (rise Typhlosion instead), Lapras (beat most common water types answers with STAB Ice Beam and thunderbolt and has some neat tools like Heal Bell and DD), Rhydon (what Bughouse said), Articuno (SubToxic is extremely threatening in PU despite the popularity of Muk and Metang and the lack of good spinners, in NU that's another story) and Zangoose (has SD, Quick attack, Close Combat, Night Slash and a better attack stat than Tauros).
I also think that you could just remove the entire D Rank since aside from a couple of Pokemon nothing else isn't worth using, just rise Granbull (potentially dangerous with Quick Feet activated), Regigigas (may work with Pursuit support), Murkrow (more dangerous than Skuntank outside of Explosion) and Octillery (strong under Tr with water spout and just like Lapras it scares typical Water-types answers with Energy Ball and Fire Blast).
Slowking: S- -> S+
Magmortar: A+ -> A or A-
Typholsion: A- -> A
Drifblim: A- -> A (or A+?): tons of Drifblim usage this tour, very effective as a spinblocker and/or late-game cleaner with CM, spinblocking is huge to keep up Rocks vs mons like Zard / other fires (and to keep up the less-used but very effective TSpikes). 
