well, the wii got a graphic problem. it's not really the hardware. more the third party support. nearly all nintendo games got some eye candy but the third parties just bring the old PS2 software with wii controls on the wii...
if you look at games like super mario galaxy,smash bros,metroid prime 3 and others, you can see games with nice design and good looking graphics.
the only two games, I know, wich got good graphics are "sonic and the secret rings" and "resident evil 4".
any other game was just gamecube level. I really hope that mario and metroid will lift the middleclass graphiclevel for wii.

but yes, you really need to play the right games. zelda isn't a game for everyone. if you like arcade racer you will totally love excite truck hope that game will do it for ya'

and don't worry about smash bros. it will be the same as for smash bros melee: best multiplayer game for the whole generation.