> Or is Unity under Gnome 3 using a different panel from the Gnome 3 fallback mode?
Yes, it is. Unity uses its own panel.
> Aren't indicators being maintained for other distros?
Indicators are development of Ubuntu, but some other distros have them
packaged. However, they don't develop them.
> Or is Unity under Gnome 3 using a different panel from the Gnome 3 fallback mode?
Yes, it is. Unity uses its own panel.
> Aren't indicators being maintained for other distros?
Indicators are development of Ubuntu, but some other distros have them
packaged. However, they don't develop them.