The best combat system is no combat at all. But I don't think that's a popular one <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />
I agree. I'm sick of RTSs that let you "build a civilization", but when you study the tech tree you find out that everything eventually supports your military. That's why I like
Emperor. Your citizens are worth more than your army. The army is there to protect your people, not kill others (although it is an option).