T. K. Arispe

 Theoretically, more Pokémon can only be a good thing, right? I guess I just wanted to play around with someone bypassing the usual party limit.

Game Freak has said that at times they've entertained the idea of altering how many Pokémon you can keep in your party at once, but decided that would mess with the formula too much. Six does feel like a pretty solid balance between a strategically diverse selection and a manageable party, so I doubt it will change anytime soon.

Most forms of Pokémon media don't actually explain why you're only allowed six Pokémon in your party at once. I think the Pokémon Adventures manga is the only canon that actually does bother with an explanation--in that universe, the Pokémon League restricts Trainers to six active Pokémon at a time because they felt that was the maximum number a Trainer could properly give care to at once. Kinda weird how in the games and anime, it's never addressed. But I guess the writers have other things to do than satisfy pedantic geeks trying to work out fictional logistics.