Two points:
First, I am reviewing your mod, just as I want people to review mine.
Second, in case you've never seen the movies, Star War was in essence two civs duking it out with each other. I'm not saying that there shouldn't be minor civs; in fact, I'm planning on including the Chiss, Corporate Sector, Vong, and Hutts into my scenario. These are mostly going to be used via events, not as major players, though. What I am against is using redundant tribes, or tribes constrained to a single planet or smaller. For example, the Mon Cals were part of the Rebel Alliance, and therefore will not be a seperate civ. The Jawas would be a poor choice, as well; not only were they no where near having any real influence on the galaxy, but they would mean that Tatooine wouldn't be with the Hutts or the Alliance. I suspect the heart of the problem here is that yours is a MOD and mine is a SCENARIO. You want it to be something that just changes the rules around to give a "Star Wars" look and feel. I want to create a semi-structured, objective-based game apart form Civ3.