The good news is that Eevee and Pikachu is going to be featured, unlike before where they mysteriously disappear when the Kanto spawn are plaguing. Not that this will change my mind on not buying the game yet, although this is kinda to be expected....
On related note, I honestly hope that this will be the last time GF as a whole pander to Kanto. I've had enough and the fandom will burn if they go and make remake of remakes (at least this is remake of rerelease that is Yellow), I think. They can pander again in next game, but at least give more love to the other lands....
I'll just hope I can enjoy weather boost Eevees, and hope more people complete Pikachu medal. I can understand Pikachu's useful existence, even if I need it no more.
... anyway, I read complaints on this "diversity" they first mentioned where less weather boost 'mon are spawning. I'd like to know, what are your general spawns now?
I live in what used to be Nidoran's biome, the Clefairy biome (Clefairy, Nidoran, Zubat), along with water biome (the likes of Horsea and Krabby). Rivers yielded fishes and occasional Dratini. Last year, pre-weather, Eevee-centric areas remained with Eevees and I took time to hunt them at times. I remember complaining about Aipom in campus as if Niantic mocked uni students (but at least that was funny). Overflowing Nidoran used to make me feel sick.
This year up until now, weather plays significant role and they give pretty nifty choices. When it rained, Spheals helped me build Anti-Dragon raid team and make progress in Ice medal, and the definition of biome starts to be fade. Cloudy time gives me Machop and Clefairies, letting me build Machamp army and nifty 2nd choice defenders, and the spawning fairies were pretty nice.
Back then, I didn't live in Eevee biome. When Gen3 comes, I tried to come to Eevee-centric area and got pissed that Eevee is dominated by Aron on weather boost. But I suppose it's fate.
But these previous era still held one common thing: they preserve game immersion.
Now? Just a month and I'm already sick of seeing Slugma, Barboach, Gulpin, and Numel. I actually feel like I want my Nidorans back; they're at least cute, female can be shiny, and could be evolve fodder (even if I don't do that anymore because I'm Lv40, Friend EXP makes them nearly pointless effort, and full 'mon box). I have never seen
any dragon spawning in months, while I used to find Dratinis around rivers... nah, the usual river spawns are no longer river spawns, breaking the immersion of the game. Back then, while these Nidorans made me sick, I actually felt immersed that we live in a defined biome (I believe my areas is also higher/more hilly).
I must say I hate this so called "diversity", because all I see are com-mons I'm sick of looking at. This is nothing better compared to the past and when it is more diverse, they spawns seemingly random selection of 'mon with not much common habitual similarity (other than they all suck). At least back then weather boost gives you extra dusts, making it exciting while preserving game immersion. Now there are nothing such as that, with rivers spawning what in real life if Pokemon is real shouldn't spawn (Pochiena and Gulpin in rivers?).
Maybe it could also because they seem to just pull out random selections to make their scrappy "biomes" (volcanic Slugma and Numel with Barboach?) while gradually moving meta-relevant Pokemon to other places like raids or otherwise limit their appearances (still pissed of losing Eevee havens). The only best regularly spawning critters that catches my mind is Growlithe and Piplup (and even then, lately it rains a lot, so it feels odd to see these puppies spawn in rain, but at least puppy is still nice puppy), and maybe Nosepass for easy excellent throw missions.
This was also probably why I didn't feel sick in Halloween; it did feel like Halloween, well-immersed.
I admit, on the upside, I
did catch 15/15/9 Larvitar days ago, and a stray Beldum (bad IV, but that matters not anyway since CD has ended... which brings us to another complaint with time-limit Power Creep, but I'll save that for another day), which are always welcome to be Pinapped. But I'm feeling somewhat less excited than before lately....
Don't even get me on the eggs.

I didn't believe I could even write this textwall either....
On the good side, I didn't think I managed to finish my research stacks before the deadline with +600k dusts accumulated from those alone. Now working to recover my ball supplies.