Well, since I had some free time of nothing this weekend, I thought that I would try to use Windows 8 on my older laptop... (which I was going to reformat very soon, anyway) My initial impressions are, well, mixed...
I've been a fangirl of tablets for a little while now, and I'm nervously excited about Metro and its full screen interface. I liked how Apple implemented full screen apps in Lion, and I was really curious as to how Microsoft would accomplish that with the Metro UI. It feels OK for now -- rather clunky and with a learning curve, but that is to be expected of a developer preview. I do hope that Microsoft takes most people's suggestions about it seriously, and that this really does not become another "Vista" in its execution.
One thing that I am pretty annoyed with now, however, is that I cannot fully close Metro apps without ending their processes in Task Manager. They are apparently "suspended" until you next run them, which would be fine if Start+Tab did not switch back to suspended apps whenever I wanted to switch to another app that I was actually using. This would mean that if I had launched 10 Metro apps in a single Windows session -- but stopped using 7 in order to pay attention to 3 -- I would still need to switch between those other seven that I had suspended, in order to return focus to those three. Blah... Adding to this complaint is that both Alt+Tab and Start+Tab now only switch between Metro screens; I don't see a way of switching between desktop windows now with Metro enabled, but I might have missed something somewhere.
On the other hand, I do like the new Ribbon interface in Explorer. I could definitely see how it would benefit tablet users, since right-clicking probably wouldn't be easy to do on a touchscreen with fingers. Unless Microsoft implements their touchscreen controls similar to how Apple does with their magic trackpad, but that is another thing entirely. Right now, however... I just don't see any reason to enable Metro in Windows 8. I'm not sure if many developers would be willing to design (or redesign) their whole programs to fit the Metro UI guidelines, which may be limiting in some cases depending on how Microsoft actually defines a Metro app (and it would then feel rather extraneous).
"I could while away the hours, conferrin' with the flowers, consultin' with the rain.
And my head I'd be scratchin', while my thoughts were busy hatchin', if I only had a brain!
I would not be just a nothin', my head all full of stuffin', my heart all full of pain.
I would dance and be merry, life would be would be a ding-a-derry, if I only had a brain!"