I have become so attached to my White team (Whimsicott, Volcarona, Galvantula, Crustle, Beartic and Carracosta) that I reckon I'm going to substitute Whimsicott for a Sceptile and roll with those Pokémon. I couldn't imagine using a different team now. It's weird. I think this is "my" team. Every other game I play will be experimenting with different combinations of Pokémon, or different stories in my head for that Trainer, but my "main" game henceforth will probably have that same team.
At least until Generation VI Pokémon make their appearance, anyway.
In fact, I think I'm gonna go train up a Treecko right now, to take my Whimsicott's place in my White team. :P