I honestly think XY actually has too many Pokemon in its regional dex. The game spams you with almost a dozen new Pokemon in every single route or cave, it gets overwhelming. There's a lot of repeat archetypes like the aforementioned early-game Normal-types, except they're not all available early game, there's a lot of Pokemon you'll find in the second half that belong in the early-game and you'd never consider adding them to your team as late as you find them in XY. And because there's so many new Pokemon in every area even up through Victory Road, you end up with like 100 Pokemon that are available too late to really be viable as in-game team members.
And tangent, despite all the diversity across the game they still stuck all the Ice-types in one spot just before the 7th Gym. And y'know, it's really silly how you go through the whole ice and snow area consisting of a town, cave, and snowy route, empty out to cold-but-not-snowy city, go through a grassy mountain route and town, then a swamp route, and then suddenly another snow-covered city out of no where that has an Ice Gym, except there's no more snowy routes with more Ice-types, this snowy city is adjacent to a swamp, temperate forest, and flower field.
It kind of feels like with Kalos they were going for having the areas be sort of thematically seasonal, like you go through Spring (grassy and flowery areas) > Summer (beaches and a desert) > Autumn (swampy areas with yellow & orange trees) > Winter (snowy areas), but then fucked it up at the end.
