Even if integrating desktop, tablet, and phone in a way that has never been envisioned is a good idea at all (and I can't say). I feel that Windows 8 will either be way too soon to do it well, or they will way take too long to ship Windows 8. We haven't even got one proven good iteration of anything Windows on phone or tablet yet.
I agree... I suspect if it is a good idea it will be too soon to do it well. And in five years Apple will do it well. That's the story of the MS product pipeline. Do something five years too early to do it well -- get stuck in the decisions made at that point in time and can't come back and realize that the decisions of five years ago no long apply.