I'd recommend you guys play 0.5. It's a very polished version of this mod, with all the buildings, 7 stock maps, custom mutators and custom maps, most of the bugs have disappeared, etc. It's a big improvement from 0.35, no longer as glitchy, and it will stay as the standard Renegade X version for a while. We're getting more players than ever nowadays, and the fanbase is growing.
Our UDK version is months away, and our "final release" is probably a year away. I can guarantee that we'll make a final release one day and a lot of these people that promised to play it will be long gone. If you've got UT3, might as well install 0.5 and give it a whirl.