definitely not. The buttons to the equipment will be subistituted by the touchscrenn so now there will be more buttons. The buttons without assignment have the same assignment that the normal game.
I think trphies/achievments are very important they extend teh game life and are actually fun to make. I hope Wii U have something like that, i think the name wil be medals or coins,
I don`t know why people want remakes on the 3DS so much, if a remake is released it would be better on the Wii U because it have a higher graphic power, so it wil look better, and a mario sunshine whit the tablet is jsut amazing, imagine the ways of using it touch screen,