Ok, I've been looking around and I want the fighters to follow the same sort of style as modern conventional fighter aircraft. Althought keep in mind that since this is space the wings of the fighters don't need to have the same limits since thier main purpose is a place for the guns, cannons, fuel pods and missles to attach. Or you don't even need to have wings and just have everything internal.
Take this F-22 for example...
Ok, maybe change the shape of the wings becuase they don't have to be really aerodynamic, chop off the tail flaps, maybe mirror the tail rudders to the under side of the fighter and attach a gun on the end of each of the now 4 tails rudders, also we don't need jet intakes, ect... Use your imagination really.
Also don't model any of the armament or fuel pods, there are modelled seperately and attached later in gameplay. Although you can model the places where these things attach to the fighter.
Few more pictures: