I, too, find this incredibly irritating. The amount of independant cap ships "defending" Liberty nowadays is just unbelievable. One example is me (bomber) and two LR pilots (VHFs) were just wandering around Texas a couple of days ago. We then got jumped by an LSF fighter and gunboat which i didn't really mind. After all, i know they very rarely use much more than fighters so i don't really mind being jumped by the odd gunboat or so.
After we had engaged a BH BC, Liberty Cruiser and a BH BS engaged us and blasted us to little, tiny pieces. I mean really do you NEED such caps to bring down a bomber and a couple of fighters? Espescially when they're already engaged by lawfuls.