I upgraded to Fedora 15 yesterday and I like gnome shell, sure it’s different to the old gnome but that’s why we upgrade software. I also like the fact that you can alt tab all the way to other workspaces nice!!. Personally I don’t miss the status bar and according to the word online, some features are already being added to Gnome3.2 which are missing currently, so for the first release this is pretty awesome work congrats Gnome team.
Personally the only thing I would like is for it to be easier to customize, but I see their is already an app Gnome Tweak Tool to help you customize your setup. The fact that the UI has moved away from all that windows like look is a great plus, this is Linux after all and we pride ourselves in being different.