I agree with Darth_Torpid-PG on this one.
1) it feels more Star Wars ish. You never see battle damage being a factor.
2) You cant use the big flet method. Those rebels are crafty. You have to defend every planet or something is going to get raided big time. Cant tell you how many space stations I have lost playing the demo mods, thinking that way enought to defend a planet. Also the big fleet thing might work at the very end which is good no, running around dragging the game out forever. Once the tide has clearly turned it will be over in a grand sort of way.