Well Ubuntu Classic may be around for long enough to worry about it. It
won't be available in Ubuntu's repos according to Shuttleworth after
October, unless you are using an older version. There may be a PPA if
somebody wants to go to a lot of trouble.

However, you are right it is just beta and some people compare it more to an
alpha because it is rough around the edges. They may work some of these
problems out. I am not sure how many users will want both as you do or how
much Ubuntu cares about GNOME at this point. Things are strained to say the
least. Although Shuttleworth did release a brief congrats to GNOME on the
launch of GNOME 3, not that they will be using it.

The really good thing in all of this was that Compiz was dying before
Canonical supported it in Unity and the developers are now paid by
Canonical. So we can be thankful that it is still around at all. I will be
watching to see if this does straighten itself out. What are your plans in
the short term? Will you use Unity or Classic or forego the cube?