Guys, the point is just that you shouldn't be:
1) Putting up examples of Pokemon that are basically never used, and generally common knowledge are bad.
2) Speaking about Pokemon generally
3) Comparing Pokemon that don't share a similar niche
4) Assuming that "Do Use" has to completely out class "don't use"-- it's enough that they're comparable and one is less out-dated.
You should be making comparisons for Pokemon that are generally from the same/a similar niche, while suggesting a Pokemon that is generally better suited/more effective/potentially more effective than an outdated or over used set. Generally speaking "generic NU Pokemon that is never used" replace by "generic OU Pokemon that's always used" isn't exactly a good post for this thread.
In fact, the opposite could very well be the better post
Example:
Don't use:
Volcarona under Rain
Timid
4 HP / 252 SPA / 252 SPE
@ Leftovers / Life Orb
-Hurricane
-Bug Buzz
-Quiver Dance
-Hidden Power Water
Point of the matter is, Hurricane is just too weak as a main attack without STAB. HP Water is also too weak to take on the game's Steel-types, even with Rain boost-- Mixed Skarmory and Jirachi can cause this set a lot of undue problems. Probably the worst thing about this Volcarona is that it's not that effective against Sun teams, when Volcarona should be netting Rain teams an advantage against sun. Its mediocre physical defense can be a problem too, especially when you're trying to value it for its Fighting Resist. Also with the popularity of CS Terrakion and Keldeo (where Hydreigon was the top Scarfer in BW1), this Pokemon is a little too slow to be truly intimidating in BW2. Especially without STAB on its main attack. Volc under rain is more of a BW gimmick than an effective BW2 poke.
Try Using:
Moltres under rain
Modest
4 Def / 252 SpA / 252 SPE
@ Life Orb
-Hurricane
-Fire Blast
-Agility
-Hidden Power Fighting / Roost
Everything that Rain Volc's original creators wanted it to accomplish, BW2 Rain Moltres does better. With STAB and 125 SpA, it hits like a TANK with Hurricane-- knocking the wind out of even Pokemon that resist it. STAB makes it a completely different beast. Because of the greater popularity of Jirachi and Mix-Skarm, you really want Fire Blast in BW2-- even under rain. Fire Blast destroys numerous key threats, even under rain, just because Moltres is so damn powerful. Also important, Agility lets it out pace literally everything-- including Scarf Keldeo/Terrakion/Latios. The fact that Moltres can out-pace all of these with Modest makes it all the more intimidating. Furthermore, Moltres' better all around bulk and interesting defensive typing make it a great asset-- more than Volcarona could hope to be. That Ground immunity giving it switch-ins and an immunity to Spikes is a huge boon as well.
Basically, Moltres
hits harder (thanks to modest and STAB Hurricane),
wall breaks better,
adds more defensive benefit, and is
also a more lethal sweeper thanks to its
superior Speed-- and hell, thanks to STAB, Moltres' Hurricane is still hitting harder at +0 than Volc's does at +1.