It is hard to get a good count on population but it is definitely growing. Xsyon has great potential and is fairly stable with low populations. I'm confident they can squish the bugs, improve the servers and architecture and get us all back into game fairly soon.

Just don't expect a feature complete, well polished, perfectly balanced game. It has a lot of cool features implemented and they work, which is a great start. There are plenty of things for players to do while the development continues. But if you have low tolerance for the unexpected and change then you should probably wait for a while before joining in