hey guys, first off, i want to say this is a very promising mod. i really like the way it is going and would love to contribute ideas (thats what i do best for civ 4) to help improve or speed this up.
my first suggestion is to maybe for the beginning of the tech tree, make it start along the lines of the Infinite empire, and continue from there chronologically, in some sense. so the infinite empire civ should start out with lots of techs, (or at least one special one) and stuff like the star forge which can produce colonists/fighters/whatever at a really high rate to show their rapid expansion early on, but with weak enough units to allow them to fall after their VERY early golden age. and like i said, go from there, through KOTOR stuff, and then the sith empires, then the old republic, then clone wars, civil war, etc. through the Vong invasion. i mean you can obviously do this through techs rather than like timer related techs, but you know, chronology may make the early times more fun.
as far as unique units, i woudl say try to have 2 per civ if you can, to try and give a wide range. like rebels, give them the air/snowspeeder that has a bonus vs. mechs and maybe has a promotion called "harpoon and tow cable" that can be used next to an ATAT to take it down... and the other one could be bothan spy or something like that.
for imperials, i'd say super star destroyer/regular one of them and the dark/storm trooper, either one.
etc, you get the idea. just give them units that can be used seperately OR apart to give an interesting but balanced fighting force that is unique from other civ's options.
now this is an idea i have that is really advanced and maybe impossible, but definately down the road... why cant we have many planets that are in space? cant we SDK this so that the planets are sort of 3-D planets, like the vanilla game, that have their own stuff, but they are connected via space tiles to other planets? and if so, then thelopez's immigration mod would work perfectly... allowing most worlds to be settled without the player's effort, to allow more infrastructure building and military building to really mimick/model the star wars universe.