As much as I like the Pokemon games, they SHOULD change a few things.
What I would LOVE to see in a Pokemon game; The ability to become a Gym Leader or join the Elite Four.
I mean, come on, you work your way up to the point where you can beat EVERYONE, but nobody's going to let you make a career of it?
Like maybe make it so that once you beat all of the Gym Leaders you can then boot out a certain Gym Leader and replace them. Make it so that once per day a somewhat powerful trainer comes and tries to challenge you.
Then do the same with the elite four. I don't know, I just always wanted to be able to join the Elite Four, so much more badass than the Champion, in my opinion.
Also, I wish they'd make a game where you could catch all of the generations in one game, BEFORE you have to fight the Elite Four. I'd love to make my dream team before I fought the Elite Four. Sadly, I doubt this'll ever happen.