I don't have a WiiU.
I may get a WiiU in the future
I would definitely not get a WiiU if it didn't support Wii games.
Trouble is, I'm far from a typical customer so my opinion doesn't really count in the grand scheme of things
Anyway I think Fox4 summed it up perfectly. If it *can* be implemented then great, but you should not design your console based around it.
But really there was no need for WiiU to go with the same architecture just to maintain backwards compatibility. They could have gone x86 and developed an emulator. Dolphin is already pretty good on x86, and Nintendo would have had all the resources available to implement some serious high-level emulation to get a decent speed on even a mid range x86 cpu. Fact is it's surely far cheaper R&D wise to evolve an existing architecture than to go with something new. And they are paying the price for that now.
I am not certain I agree. The low power x86 chips the PS4 and xb1 use probably could not run wii games well on Dolphin. Granted, Nintendo would probably be better at an emulator than the dolphin folks or use a faster CPU, but it seems a bsd way to do things.
There is nothing wrong with a Power PC CPU. Developers seemed fine with the architecture last generation.
The gpu is where most of modern game enhancements are made. Nintendo sacrificed a noticeable amount of gpu performance to get to the market early with a small, low heat, game console.