I wouldn't be surprised to see Ivysaur and Squirtle not make it back in, not because of something as silly as "too many slots" but rather because it's harder to reconcile them into fleshed out characters than Charizard (admittedly Ivysaur moreso than Squirtle). It feels like the three of them were picked to complement each other more than they were designed to be reps on their own, and they could cover a lot more ground by picking characters without that.
Charizard's a special case because he's practically one of the series mascots and got disproportionate amounts of love in X&Y.
Charizard's a special case because he's practically one of the series mascots and got disproportionate amounts of love in X&Y.