In longterm the Wii kind of sucks IMO... Ok we have the first class Nintendo Inhouse games, a hand full at least, and a great Wiimote/Nunchuck. Awesome for multiplayer, but honestly, in 2008 I'll play 3rd(4th) generation Xbox360 games and 2nd(3rd) generation PS3 games on 1080P with Dolby 5,1... what else do wii have ? Bad textures, low performance of the day before yesterday and low res without effects... Wohooo...not...
EDIT : Note that I am not a graphics fanatic, I still play SNES/SFC and I enjoy it, but I would have preferred to pay500 or 600 bucks for high end performance instead of 250 for this average machine.
I know that fun is not directly related to hardware performance, but it helps a lot to increase the intensity of the atmosphere etc.... and as much as I like Mario and such, I think it was a totally wrong decision of Nintendo. For me at least, maybe not for Nintendo and their business...
You know I just don't want to play Egoshooters or Racing games on this machine, why should I if I can get High Def and 10 times more moving objects and whatnot on 360 and PS3 ? Sure multiplayer parties and Nintendo games liek MArio - I'll be there and I'll have a lot of fun. But I can't see myself buying a multiplatform game for Wii....
I think the high-definition graphics of the PS3 and 360 are a bit overrated. Sure, they're technically more advanced, but does that automatically mean the games will always look better? Not at all.
If it has a clean, solid presentation, I'd easily buy a multi-platform game for the Wii.