Nintendo have been saying time and time again, the Wii console isnt neccessarily gonna be up there with the most graphically intense consoles, but instead they're focusing more on the actual gaming and playability side.
This pretty much means the 'Wiimote' is the real key to the consoles future success...
As E3 pans out im sure more and more confirmations will trickle down from game publishers showing their support for the wiimote.
I personally think Nintendo are risking alienating a lot of 'casual gamers' who dont particularly want to get so involved in a game and would rather pick up and play for a short period of time. On the flipside of that however users are given a far more involving gaming interaction like nothing seen before and im sure that'll tock all the playability checkboxes Nintendo want to hit.