DoW isn't very much about base building. The buildings are so expensive in terms of the amount of resources you have that you don't really find yourself building too many of them. Plus the combat starts very quickly, unlike SWGB where you spend the first 10 minutes doing nothing but scouting and managing your econ.
I'm guessing that if EAW has any economy in it, it will be on a very large scale with no microing. Maybe your resources will just depend on how many planets you control, or maybe different planets will give you different kinds of resources. But the RTS genre seems to be moving away from resource management. DoW doesn't have any economy at all.