I've given this one some thought and I've come up with a few points to improve it:
-The spaceship itself should be assembled and launch from orbit ala civ2 since launching such a ship into orbit could only feasibly be done in many pieces
-In previous civ games the sapceship is built without having to research the technologies that would be involved in such an undertaking - suspended animation. advanced (closed loop) life-support systems, advanced propulsion systems, etc. In Civ 4 there should be a number of advanced space technologies the need to be researched before building can comense.
-on a more general note I would to see more use made of space in Civ4. Colonizing the Moon and Mars (and even terranforming Mars) are child's play compared with interstellar colonization. Perhaps once you've completed the Apollo Program you could invest gold or shields in space colonization in exchange for benefits. There could even be seperate Moon and Mars worls maps. Having something like this available before building your starship would make things much more realistic.
-The spaceship itself should be assembled and launch from orbit ala civ2 since launching such a ship into orbit could only feasibly be done in many pieces
-In previous civ games the sapceship is built without having to research the technologies that would be involved in such an undertaking - suspended animation. advanced (closed loop) life-support systems, advanced propulsion systems, etc. In Civ 4 there should be a number of advanced space technologies the need to be researched before building can comense.
-on a more general note I would to see more use made of space in Civ4. Colonizing the Moon and Mars (and even terranforming Mars) are child's play compared with interstellar colonization. Perhaps once you've completed the Apollo Program you could invest gold or shields in space colonization in exchange for benefits. There could even be seperate Moon and Mars worls maps. Having something like this available before building your starship would make things much more realistic.