Would love to see consoles with a customised miniature discreet GPU solution that could be upgraded later down the line.
Imagine a GPU only provided by AMD that pushes a console to the next limit. The architecture of the playstation could remain, but we could continuously see more grunt as time goes by leaving us with the option to upgrade.
Gaming wise the developers could simply provide minimum gfx for the stock playstation, but allow us to push the detail up as we add in a better gpu.
Then again, I guess Sony would miss out on the additional profits.