I'd say the really, really frightening thing is the situation with GTK. That was already apparent at last year's Desktop Summit, where Benjamin Otte described his team as mostly just him, told the audience that GTK3 had some very bad issues (with styling, iirc) that could only be helped by doing a GTK4 really soon -- and that Windows and OSX support were just not coming along.
That sounds like bad news for a couple of important and widespread projects, like inkscape, gimp or mypaint. And I couldn't care less about gnome, the project or the desktop, but those applications are important to so many people and have so much effort invested in them, starving their foundations is scary.
The XFCE devs are smart sticking with GTK+2. GTK3 is dead in the water.