Since 2.0 from what I've seen,there haven't been many improvements.GNOME tries to be stable,and in some respects,that is the right thing to do.But if GNOME doesn't catch up with the latest technologies/innovations,it will remain just an old,unused DE.And we don't want that,because it is a very stable and nice Desktop Envirronment.
This isn't an idea.
Go and poke them with a stick if you must.
Or you could help them with coding. When's the last time you donated?