Oh boy, the old venator suggestion
I'm going to +1 this one. Although we have just landed on Felucia, a rotation between base and fleet isn't that bad. And I'm sure the directors could even make the base rotation longer.
Extensive was heavily optimized within it's latest update and I am even one to say, "Extensive is too large and too confusing". But, after the latest update, extra hallways were removed, and made it a lot less confusing for the general trooper to walk around.