Hey, I too would love having a game like GalCiv2 on the 360, but given the pace with which Stardock has put out version enchancements, patches, and upgrades, it would best to let the game get stabilized first, and then perhaps get ported over to the 360 or other platforms.
There would also, of course, be the issue of cross-platform development that would have to take place so that the game is able to make use of the things mentioned above (higher resolutions, graphics, multiplayer perhaps, etc.)
Hopefully someday soon Stardock will be a console system developer, and hopefully it'll be on the Xbox platform, but for now I'm happy they keep doing such a great job on the PC side.