Yeah, I can see your point there. I am not a big fan of tech trading either. If you want to eliminate the colony swapping entirely the only option beyond a house rule I guess is to make the game only colonize own type. It can slow things down a bit. But not too bad, as long as you don't make it colonize own atmosphere as well.
We are opposed to slave trading, but my empire being a informed republican form of government has been known to allow emmigration/immigration. After all, no matter how good a job you do as a leader there are always going to be those that dont agree with your style.
I am also not above capturing populations in war and "relocating" them deeper into my own territory, for their own protection of course. We wouldn't want their former empire coming back and glassing the planet now would we?
Geoschmo
[ July 09, 2002, 19:38: Message edited by: geoschmo ]