I would really love to see another sidescrolling 2D platformer. The Donkey Kong Country series was my favorite of all the Rareware games and I would really love to see these guys come up with a new platformer similar to that
Hands down, Donkey Kong Country for the SNES. I've loved that game all of my life. I love it so much that I've edited sprites of every Kong to be compatible with all of the games so those that want to make their own fangames can use them.
I really like JonTron and I think it would be absolutely awesome for him to do a voice. I really don't understand all the hate of him. He's really funny and besides, he definitely will promote the game and his fanbase would be more willing to buy the game or help with the kickstarter.