I think the Kanto starters helped me decide which Kalos starters I'll go with. I think I've decided to get both X and Y. First time around, I'll go for Fennekin and Squirtle and then second time, I'll go for Chespin and Charmander.
So far, I'm only really thinking about typings, not necessarily about individual Pokémon. Some of the ones I've seen fill the slot for a type I want, but I haven't assigned all of them.
So far, here's what I'm thinking for my Y team:
-Fire: Fennekin (please don't be Fire/Fighting)
-Water: Squirtle
-Fairy: Spritzee (that is if its evolution(s) look(s) cool)
-Grass
-Ghost
-Dragon
-Flying
-Electric
-Rock
Obviously, at least a few of the Pokémon I'm going to get will be dual-typed. I just don't know which ones yet.
I'm also looking to get all Generation 6 Pokémon for the first time around (with the obvious exception of Squirtle). I usually open it up to previous generations the second time.