Since you're not planning to clone me...

....and there's a lot of work in both projects, which do people want sooner: a fixed-up fast-user-switch-applet or a fixed-up compositor in Metacity? Comment here to vote. (In the best traditions of local government I reserve the right to ignore the referendum entirely if I feel like it, but I probably won't, and I'd like to know what people actually want.)
Or does anyone with some spare time want to volunteer to help out with either? I'd be happy to sit down with them (virtually) and show them where things need work.
Update: I apologise for assuming everyone knows what the hackers' names for things are.
1) fast-user-switch-applet (FUSA) is the program that sits on your toolbar and lets you choose another user, whereupon it logs you in as that user, and then you can switch back again and so on. Mac OS has something very like it. There appears to be some way in which it is crashing at present. I have been too busy with Metacity to find it, but it needs finding. It also needs to cooperate with GDM using the dbus protocol and not unix sockets.
2) simply put, a compositor is a program which changes how windows are drawn on the screen. Compiz and Beryl have funky compositing capability. Metacity's compositor is basic but almost functioning, but still needs some work.
Personally, there's one I'd rather do first than the other, but if more people want the other I might do it first instead.