[PvK]

I suppose if the players are really concerned about preventing homeworld-guessing, someone (if the group is paranoid, a non-player) could load a random galaxy in the map editor and then specify (or add, if necessary) ample planets of about reasonable attributes in the map editor as the ones to use as homeworlds. I haven't tried this yet, but I assume the idea is this would cause the game to choose existing (random attribute) planets, rather than building new ones that follow a blueprint.

PvK