@Grampy, it will likely be difficult to release a game using technology from 1998 and 2010 at the same time. Its difficult enough to port between the Wii and Xbox 360 and they use essentially the same architecture, but what if they want to move away from the Power PC line?
They have a simple mouse-like interface and between developers and tools, their likely best bet will be making the system PC developer friendly. It makes perfect sense, considering the controller in many ways is an airmouse and there are a lot of developers familiar with that architecure. Also much of the development of CPU/GPU combinations will be focused on this space, I don't see IBM making much progress in this area.
My honest belief is that either they will buy the Xbox 360 design in entirety as that whole system will be ready to fit inside the form-factor they require (Sounds far-fetched but it does make sense) or use something like Intels X86 CPU come GPU Larrabee. Most likely the latter actually because Intels design goals of conserving offchip (expensive) bandwidth fits into their design principles of having a simple system.
The developers won't have a problem with HD by the time the next Wii is released. The issue with the current consoles is they really pushed the power/heat envelope to far too quickly and forced the developers to play catch-up. There will already be an HD install base of up to 100M consoles by the time the next Wii is released. So long as its easy to port to, it won't have a trouble if it matches or beats the current HD consoles performance.
Im not sure about Motion+, its not released yet. However its not the graphics that let the hardcore players down, its the fact that the Wii cannot produce the game worlds that the HD consoles can. Strip away the graphics down to a wireframe and the Wii couldn't run most HD games as they are currently designed.
Tease.
