I think the game should star all popular Nintendo characters, not just Mario. I wanna see Samus, Fox, Ness, Kirby, Zelda and the rest of the Big N gang! Also, if these features aren't already implemented, I'd like to see these:
>Courses taking place all around the Nintendo universe
>Exploding, flying, and/or remote control balls (Not in that way, you sicko)
>Bad sportsmanship (Bowser: "You got a birdie!? No way!" <Breathes fire in Mario's face; Mario is blackened, like a cartoon character after an explosion, standing there wide-eyed>)
Wahoo!
-Blue Yoshi (more than meets the eye! Arr!)
(Note: This post is brought to you by Spelling Beard, the spelling pirate. Get jiggy wit it!)
Sniff sniff... do I smell a Lucky Fruit? Wahoo!