Well, if the gameplay of the old 2D games remains the same, not a whole lot. I mean, watching a breakdancing cactus after you beat a level would be pretty cool. Although I wouldn't look at Nintendo quite the same anymore...
Stupid Quotes: (6th edition)
"I honestly don`t see how the Cubs can lose the [National League Championship Series]. I mean, the Cubs are up by 3 games, and Mark Prior and Kerry Wood are pitching Games 6 and 7 at home. As bad as they`ve choked in the past, there is absolutely no way that the Cubs can lose this series to the Florida Marlins."
~Me, failing to see how badly the Cubs really can still choke, even today.