Bad Teams are definitely overdone a little bit. I think I'd like it better if it was one guy and his crew instead, hearing about Team X gets old after a while.
I like story-driven games, so Emerald was very welcome to me. I would like a bit more of a Gym Leader focused game though, where you interact a bit more with the Leaders outside of the Gyms, I think that would be cool.
Still, I need my 3D Rayquaza intervention regardless of anything.