obviously on a small map with few habitable planets you don't get many tiles which nerfs your ability to build wonders etc. some suggestions (probably stupid) follow:

1. scale terraforming techs with map size/habitable planets (ie small map = more powerful terraforming techs = more tiles for each individual planet)

2. consider making the manufacturing/economic/technological capital tiles an upgrade to the colony tile (with appropiate colony image), thus individually distinguishing the colonies. Also perhaps consider expanding the capital options to include morale, military, prison etc

i iz running away now............