Possible Corvette solution
OK, so I haven't played SINS since the very first one which was released in 2008. I decided to get back into this game that I had so much fun with and I am happy so far. I am happy because I see corvettes as a bid step in the right direction. My biggest problem with sins was that it felt so static. A bunch of massive fleets of space ships go at each other and then stop and just shoot at the other fleet with little to no movement. It just doesn't feel right.
This lack of movement is why corvettes are op (among some other things such as low cost). They can hit and run while every other type of ship just sits there, usually firing without any movement. Why not introduce attack and defensive patterns to the frigates, capital ships, etc.? I don't expect them to be able to hit and run, but it would be easy to allow players to select different attack patterns based on the situations they are in. If you don't know what I mean go watch some old star trek next generation shows where Picard tells his pilot to run certain maneuvers to help them fight or evade better.
This type of movement would make the combat much more interesting, and could help against the super maneuverable corvettes.