This is how far I got so far.
link to another game
Anyone who's interested can look it over and let me know if there's anything you think looks stupid or doesn't make sense.
If someone wanted to play the Captain of the interdictor, that would be fine with me as well. As long as they're a hands on captain that will go along on missions. No fun sitting around twiddling your thumbs on board your ship all the time.
Now, I realize you start out with a LOT of firepower. A capital ship, 24 starfighters, even some AT-ST's. But I see resource management being a part of this game. Each Tie that get's blown up, is gone. So you have to be careful with what you deploy when and where.
At the same time, if you start deploying AT-ST's on a planet and walking into a city, that city is likely going to take offense, and see it as an invasion force. Suddenly you're starting a war.