I can't even use my Windows 8.0 on my 32 inch TV that is 1080 sitting a couple of metres away, while keeping the resolution and boosting all the accessibility settings to the max.
Even the metro Apps I can't use.
I'd need a 50ft display! It's another facet of display/accessibility issues.
I had high hopes after Media Centre, that Windows would get this right. And bought Windows 8.0 specifically for this purpose. Disappointing. I'm forever going over to the TV and my neck hates it.
Personally I think part of the solution is to change the menuing system, breaking it out from the window. If I can at least use the menus/controls on apps I have a good chance of using them.