I know I saw a small post on this already, but I really hope Sins is not like so many other RTS games out there in that it lacks the civilian 'feel'. I bought Command & Conquer 3 a while ago, which is a fun military war game, but it got really really boring after a few days because that was all it was, no Sim City like civilian growth to either help grow or an enemy civilian society to destroy. It got boring because it was simply 3 factions fighting out in a who can build to domination the fastest and also because your choices and decisions had no real influence on your enviroment (the civilian sector).
What I'm hoping to get at is that I hope Sins goes beyond just the military fighting but also includes the random and sporadic growth of the civilian populace like in the old Sim City games. Just like certain buildings semi-randomly appeared out of certain zones in Sim City without any of your real control, I think that it would be great if Sins did the same thing as that only with trade ships or cruise ships or interplanetary civilian ships (think 747 flights on the planetary level) or a mixture of them all between your controlled planets/starsytems or between your planets and their moons/orbital platforms. I think it would really add that feeling of there being something other than just the military that's under your control as well as affected by what you decide to do, but just make sure that the civilian sector is self-ruled and entirely random like in and what made Sim City so great.
To make the civilian ships less imposing or as powerful as your military controlled ships, maybe just make them a third the size. Just a suggestion.
I think this game is going to be amazing and I can't wait for it to come out! It's like all my daydreaming becoming a reality, it's great; the posts are fun too.