I use zero extensions these days. In the beginning I hated it (the Windows UX was heavily burned into my mind) but once the Gnome workflow "clicked" anything else felt super clunky.
Not that there's anything wrong with extensions. Some of them look great
Same, that video is pretty silly but many extensions are really awesome.
blur my shell: just make it look beatiful instead of a bit ugly
appindicators: needes to basic app support
more quicksettings are always good
window decorations: why doesnt GNOME have a maximize button, this makes no sense
With those extensions though, GNOME is pretty cool. I prefer KDE a lot, and even though I hope to be able to use workspaces smoothly one day (which is still not easy in KDE I think) I am pretty happy.
But if you think about it, not having workspaces is a total pain.
Interesting. KDE too but you also have a button. Makes more sense to control windows through buttons instead of a button, a doubleclick on a bar and a keystroke (meta)
The reason it was cut is more about the drag action, dragging to panel maximizes and grabbing it will automatically restore it down. It's basically combined with the move window action.