The "community" edition is not a real community edition, because it's not built by the community. Rather, it's built by just a couple, privileged people. With Goldhawk working on other games, support for Xenonauts will probably become a low(er) priority for them, and if they start building Xenonauts 2, they'll probably stop working on Xenonauts almost entirely.
So I ask, will we ever get a real community edition where any programmer can see the source and submit patches to improve the game? The patches could still be accepted, rejected, or edited by a couple privileged people for the official "community" edition, but anyone could fix a problem that they see in their own version of the game, or make the game how they'd like it to be.
People still have to purchase Xenonauts to get the art and other assets needed to make it work, so it wouldn't lead to rampant piracy. And with Xenonauts 2 coming, the older Xenonauts game should really pass into the community's hands rather than just becoming unsupported and unfixed.