Here is my gnome-shell employed a lot of extensions and dirty hackishes!
So what are the differences between Gnome-Shell and the others out of the box?
- classical main menu had gone away.
- task managements were moved to "overview".
- needed Alt key to be appeared "shutdown" menu entry.
- looks better if Alt-Tab window switcher had beauty thumbnails.
- top panel always is wasting spaces such dull.