I stumbled across a project called
Majesty of Omega, which is an open source project aimed at creating the
original vision of Master of Orion III (MoO3). Note that the game as it was originally planned differs significantly from the sorry game that was eventually released. The game mechanics are a lot more complex than those of BotF2, but for people interested in this sort of game, it might be worth checking out.
I've already signed on as a contributing developer. I think it's a pretty cool project, and even though I'll be dividing my time between Majesty of Omega and Supremacy, I think it'll end up helping the BotF2 effort in the end. The good news is that the project uses the same technologies that I use in Supremacy, and the lead developer has shown some interest in my game as well, so he might contribute some code. We may also collaborate on a 3D tactical combat engine that can be used in both games (and others, since it's open source).
Anyway, if you liked the MoO series and you thought MoO3 had great potential before half the features were cut, you should check out the project.