Hi!
All of us consumers paid good money at Best Buy or Amazon for your game, Brad. Please reinvest some of that wonderful cash we gave you, several million dollars, and add multiplayer. We would appreciate it.
Please speak for yourself. Me and obviously quite some posters here do not belong into your "we".
And from my POV and experience with TBS MP games, just adding MP to the GalCiv, without significantly changing the pace of the game, will not add much quality to the game:
1) Currently game progresses way to slowly to be playable by more than a few players. An usual Stars! game (where most my experience comes from) usually takes 60-100 turns to complete, but in that time each player colonizes several dozens of planets, researches up to 156 technologies, builds several hundreds of capital ships, several (tens of) thousands of support ships, and fights hundreds of battles. Now look at Galciv and tell me where the game with 100 available planets and 4 players is at the second year of the game?
2) the "timer" system where each player has only a few minutes avalable to do his turn would help a bit to speed-up the game, but would IMO completely negate the "sit and think" essence of the TBS strategy game, and would reduce it to RTS style click-fest. I don't play TBS games to have a click-fest. I play games when I have free time, and simply dislike to be dependant of the free time of the others to have fun. For me it was almost too much of a burden to coordinate our actions over IRC in one large Stars! game. The only limit I want to see it a TB strategy game is the date to which my turn has to be done. Yes, PBEM game.
3) each MP game needs to deal with the upleasant part of it: player drops, old grudges, flame wars, cheats. For that a developer needs LOTS of additional code. With lots I mean the amount that can be compared with the code of the game. And the development here NEVER ends, because if it would end, there will always be players that will exploit known bugs to win. And that simply kills the MP part of game for any larger community, because nobody will be ready to invest dozens of free hours into the game just to have his fun ruined by a dirty cheater. Stardock has some experience in that field, but I'm affraid we'll just need to wait for GalCiv-3 to see MP introduced into the game. If you don't have the needed patience for that, I'd say you're in te wrong game genre.

BR, Iztok