There are plenty of examples: globalmenu on/off, globalmenu hidden/showed by default, buttons on the left/right side of the window, size of the icons in the launcher, side of the screen on which the launcher appear, show the launcher on every screen or only the main one...
They've already given users several choices. They're called Kubuntu, Xubuntun and Lubuntu.
All you can do right now is to move the global menu from the "global" bar to the window bar. You can't still have it back to "default", like other operative systems, and you can't still have it being visible by default.
And, by the way, this was just one small point of my post. Everything else still applies.
If Ubuntu listens to the loudest community whiners the UI would be a terrible mess. If you don't like the default desktop: sudo apt-get install -y fluxbox, or whatever of the dozens of other WM's are out there that you like better. Problem solved.
By default like the operative system with 90%+ of the marketshare - Windows. I'm not saying that they're doing it good, but 90%+ of the people using a computer expect it to act that way. I'm also not saying that it should be the default, just have a tiny little option somewhere (instead of forcing me to remove the appmenu* packages, which I know how to do it, but my parents sure don't).
I'm also not sure why are you attacking me and telling me to install another DE - I have (In fact, I don't even use Ubuntu anymore, as I don't like apt-get and some other stuff). I'm just saying that they should add some options to make everyone happy. I have the same feeling towards Gnome shell, but at least this one has easy-to-install plugins.
For my parents I have installed Kubuntu, KDE always works and always has the features you need.