OK this marks the end of the Gnome 3 switch. I have given it a serious try and I have decided to leave it. The main reason is that it has turned into a "hobby" to spend the extra hour after every upgrade to tweak back the flexibility into Gnome 3.
Most of the extensions are not supported so it might take some weeks before they are even usable in the new Gnome version - if at all.
(After having done that; Gnome 3 was quite good though)
The vanilla Gnome 3 is simply not good enough without the extensions and I can think of other hobbies than trying to fix them on every upgrade.
The Irony is that the Gnome devs seem to think that they have thought of everything so they could not care less for the extensions.
Linus Torvalds has put this into words far better than I can...
It is mainly this attitude that makes me leave Gnome. If it is perfect; who am I to test it and criticize it?

I take no pleasure in making the Gnome people whine about the lack of recognition for all their hard work.
And they might still nail this one - who knows?
But I am not bursting with admiration right now so I have removed Gnome 3 from most of my boxes.
Because Gnome 2 was better. KDE is better and Openbox is better....