While I'd love game changing effects, I'm perfectly ok with it having multiple slots, such as the offensive retrofit to allow tractor beams and something else or just default them having beams. I'm expecting to see something eventually like the HWK where it can attack a little bit, but is even more purely a support ship.
At least that's how I'd expect any gravity well equipped ship to run in Armada.
This is how we did it on Shipyards:








