It would be less than a day's work to have it support any additional version of Debian or Ubuntu (precise/wheezy would be quite easy since we've run both in production). It's probably also not hard to support something RHEL-based too but that'd be a bit more work.
RAM usage could also be brought down a lot for smaller environments with a bit of work; most of it is the fact that we run a set of like 15 queue processing workers that each import the entire application.
Where would one start if they were looking to disable that?
If you're interested in helping I'm more than happy to give you a bunch of pointers for how to do it :)