[Space/Spaceships] Getting the velocity/Delta V I want with the tech I want

[jeff_wilson]

SCC, you might consider dropping the TL of one of the more advanced drive systems and/or advancing the TL of the society in that area, so that you can use antimatter rockets or total conversion or whatever you need to get back and forth in a reasonable time. This also makes it cheaper, so that there is a margin for wasteful practices like import bans on crop seeds, and you can introduce the in-continuity reason for them when you come up with one.