The thing is, that while bombers may have too much capabilities against fighters (which I honestly don't believe as much as the others here), if they get nerfed, serious balance would be thrown. As it stands, an OC Dessie with two missile turrets and a capable pilot can tear bombers apart. I know this from experience. I consider myself an alright bomber pilot, and against these, I have serious problems. Now obviously a single bomber shouldn't be taking on an OC Dessie, but the fact stands. Missile turrets already rape bombers. If bombers lose manueverablity, how do you think missile turrets will fare? Answer me that, please.
On top of that, a GB with fast tracking turrets and a pilot good with turret view controls can do very well against bombers already. Again, if bombers get bigger or lose handling, they are going to be seriously unbalanced in the other direction.
What AoM said is good. Bombers shouldn't be used in every case. I'm guilty on occasion too, but I try myself to limit it. Just the other day there was a Corsair attack on Malta. I only pulled in to attack when a Destroyer came along. I took it down, then I pulled off. The only reason a attacked again was in self defense.
So moderation is always good. Sometimes it's not applicable, especially if you're a pirate in hostile territory, but at times when VHFs can fight VHFs, let them.