Sorry for being late to the discussion, yet again! I haven't committed much recently, but I still wanted to weight-in.
So, reading everyone's reply I get the impression that feel that GIT really isn't all that great if you're not using it with a more powerful host like GitHub. Is this true? I've only ever used SVN and CVS, and only ever committed to GNUstep, so my experience here is very limited. My only opinion here is that if we're going to move to a new versioning systems, that we move to at least a more powerful one. I like how simple SVN is (it doesn't get any easier than 'svn co svn://
svn.gna.org/svn/gnustep/modules/dev-libs'), but understand that it comes at a price. Learning a new, more powerful tool is not a problem but learning a new, more complicated tool that offers the same or less capabilities will be very frustrating.
As for the move to Savannah, I think it's been long overdue. It has offered everything GNUstep needs for quite a long time. And having all the development stuff (bug tracker, source code, etc) in one place has some obvious advantages. That being said, if we move to another source code hosting site, lets pick one that can also serve all out needs instead of trying to piecemeal it ourselves.