It would also be great to see Systemd used. Rather than Upstart.
A global menu and a launcher (like Gnome Do) are some of the first things I install after upgrading. Along with Docky.
I realise some of these are fundamental changes to the Ubuntu way, but it's what is drawing towards alternatives, and further from Ubuntu (which I've used since Warty).
The inclusion of unity is not disabling the usage of Gnome 3, although I agree that Gnome-do should be integrated as default, it is so useful.