The main thing the extra powers going to be wasted on is 4k.
Agreed, the power spent on doing native 4K would be better off spent on any number of other things IMO, but even just 60fps but lighting, materials, effects. Unfortunately, 4K is a sexy buzzword that the companies will use to sell their shiny new boxes.
Given the huge jump in CPU power, what I'm most hoping to see is exactly what I wanted to see from the 8th gen but which they failed to deliver; a big jump in simulation, interactivity, like BOTW's physics/chemistry stuff but x10.
Bet with Liquidlaser: I say PS5 and Xbox Series will sell more than 56 million combined by the end of 2023.