I don't know about it being Your Mom but I wouldn't mind it being an older sibling or a regional professor. Or a Gym Leader again. A little more ethnic diversity would be nice to see. And I think Maple sounds like a good name for a female professor.
"Strong Pokémon. Weak Pokémon. That is only the selfish perception of people. Truly skilled Trainers should try to win with the Pokémon they love best". -Karen
"For every pokemon there is a purpose and a time when it can shine under the sun." -Blue1225
A region with a name that doesn't fit their naming pattern.
Something new, like... uh... Karnar?
I don't know...
Actually the Japanese name for Unova broke the pattern. And, the Unova elite four member Marshal is black. I want to see Prof. Oak again, from what I can see we won't be seing him this gen.
I like the 3d pokemon attack idea.
Damn nintendo for not letting us battle GEN IV with V
Zweilous? Platinum wouldn't have data for it, and... the game would probably crash or something.
This conversation is getting to be very awkward.
That aside, it would be nice to have more than one game at the Game Corner.
Anywho, I know other people have mentioned this as well, but I want to see more of a family unit. It'd be really cool if they did a little change up and had a stay-at-home dad while mom was a researcher or even a gym leader. Heck, what if Dad is the Pokemon professor and Mom is a leading researcher? That'd be nifty. One of your rivals could be a sibling (maybe the boy or girl PC that isn't you) that starts his/her journey with you. Perhaps they are a year older than you and resent you because your parents held him/her back so you both could start your adventures at the same time, thus adding a hint of animosity between you and your rival. Hmm... just a thought.
OH! Something else I thought about: I want a jungle area. We've had tons of forests, but I would be really be up for a legit JUNGLE.