Tenacity's suggestion is perhaps the best balancing idea I have ever seen in my relatively short tenure here.
It makes absolutely perfect sense, and as an added bonus it makes light fighters more useful again.
Fighters should be escorts, both to bombers and to capital ships (or freighters) to protect against bombers and their escorts.
IE;
1; Fighter role = to be ace and kill other fighters so they can help kill what those fighters are escorting
2; Capship role = to act as support/command/control to the fighters and knock out other cap-ships
3; Bomber role = to survive long enough to knock out cap-ships
As it is now;
1; Fighter role = to scramble to kill bombers
2; capship role = to kill each other until bombers come along, then cower at ships 1/100th their tonnage.
3; bomber role = to be uber and commit vehicular manslaughter with torpedoes.