Have you installed and used it?
You'll find that even with Metro on you'll be using the keyboard more.
The upgrade process from 7 to 8 was simple, and some of the apps I'm using (remote desktop) are nice. Kind of like RDMAN built in. The people and calendar tiles are cool - and you can navigate quickly and easily with hot keys. The new task manager is nice, and the search is instant.

This is still the preview, I'm looking forward to the polished finished product. I find it odd there are so many negative comments coming from IT workers - especially when it looks like most posters have not even attempted and install!