Balance is just fine, Solaris turrets were made for a reason, same with Zappers. Bombers were put in to Discovery as Anti-Capital ship vessels, or anti transport, depends what you use them for. Back in 4.85, me and Three bombers solo'd Three LABCs in New York, just after taking down a Liberty Carrier. The reason they lost was simple, they weren't outfitted for Anti-Snub combat. (That and, they weren't very good at dodging SNAC's.) It depends on what you use on your ship, how good you are with your ship, and how good said bomber pilot is. No balance needed.
Currently unable to consistently be present in the Community due to life constraints.