This isn't a turret shooting through the model. The model IS the weapon. There isn't something turning around. The ship has to turn around, because the ship is the gun. (AI SHF, former Marsflyer, just has guns encased inside its hull but not fixed as a major part of the model)
About the refire... no need for that. The gun doesn't need to be even more useful against bombers, the cruiser rapes them even now already (when flown well). Doing it for cooler looks? Not a good enough argument for me.