Quoted By:
>Red/Green/Blue
Shit enemy teams.
>Yellow
Can't evolve Pikachu.
>GS
Shitty encounter tables. Evolution stones locked behind postgame. Dumbed down empty Kanto when they could've really fleshed out Johto with that space and made it truly amazing.
>Crystal
Stripped Mobile Adapter features from international release. Still has dumbed down empty Kanto and doesn't improve Johto much.
>RS
Shittiest spritework in the series. Wally doesn't get the screentime he deserves as a proper Rival in favor of shitty May/Brendan. Awkward middle of the road battle mechanics.
>FRLG
Awkward middle of the road battle mechanics.
>Emerald
Same as RS, plus having the best Battle Facility-related content in the series trapped in the least competitively accessible game.
>DP
Shitass regional dex with a lot of the new Pokemon restricted to postgame arbitrarily.
>Platinum
There were story elements I liked in DP that were changed for what I feel were the worse despite the overall improvement. The Platinum Frontier is shit compared to the Emerald Frontier.
>HGSS
Ruins GSC's perfect aesthetics. Ignores Crystal's improved encounter tables. Does not solve any of GSC's flaws and does not go the full distance needed to truly solve any of the problems it does try to solve.
>BW1
Poor story despite the heavy focus on it. Cheren is the worst rival ever except for maybe RSE May/Brendan. Extremely linear exploration during maingame.
>BW2
Arbitrarily cutting a few areas from BW1.
>XY
Smallest postgame in the series tied with RBY overall. Lumiose has no map.
>ORAS
Ignores almost every Emerald addition, despite Emerald being the third version with the most impactful changes, instead of trying to gracefully integrate them with the classic splits of RS and the game's new elements. Gave the New Mauville dungeon a beautiful visual overhaul only to strip the dungeon itself. Zinnia is the worst character in the franchise.
Yep, that's about all the problems I personally have with the games.