Once they get their stuff together on the turrets, these big ships will be a force to be reckoned with, as they should be imo. You can't advertise a capital ship saying it can deal with "swarms" of fighters and subsequently give it turrets that can't hit the broad side of a barn if the ship isn't moving at a constant velocity. I'm quoting myself from RSI forums regarding the effectiveness of turrets and why I believe they will change:
As someone who has spent quite a bit of time in a M2A2/3 Bradley Fighting Vehicle turret, stabilization technology is something I've experienced first hand. In the Bradley (which had already been obsolete for quite some time during my tenure) You laser range the target (re-lasing as needed to keep range current) and center your crosshairs, and as long as you squeeze the palm grips (keeping the turret drive engaged) your target will stay in the crosshairs, independent of the movement of the vehicle. To take it a step further, if you maintain a correct range by re-lasing often and keep your crosshairs on target, the computer will even lead the target for you, so all you have to do is shoot and watch targets burn. The M1 Abrams variants have it too.
The point of this fun trip through a small slice of cold war US Army technology is two fold. 1: If every industrialized country in the world had the technology and was using it before the year 2000, it is very likely that space ships almost 1,000 years newer would have been able to come up with a way to replicate the technology in their ship turrets, and 2: even though it might seem "too easy" to some, unless you can read the mind of the pilot of the ship (who is busy positioning the ship or performing evasive maneuvers in a highly fluid environment) there is no way to effectively and consistently engage targets without a targeting system independent of the movement of the ship.
Example: You're gunning in one of the tail turrets on a Starfarer. Fighters are covering your escape by engaging a group of hostiles attacking your ship. One of the hostiles is in an advantageous position to the rear of one of the friendly fighters and you have an opportunity to kill the hostile ship, saving the friendly fighter. Right as you get ready to squeeze the trigger, the Starfarer pilot turns to avoid a collision or position for a jump. Without turret stab: the slight turn moves your turret enough so your first burst is thrown off target, penetrating the already weakened shields of the friendly fighter, destroying the ship and freeing up the hostile to focus on your ship. With turret stab: slight changes in movement of the ship are transparent to the turret gunner. Bursts are on target and the hostile fighter is destroyed or at least distracted long enough for the friendly fighter to change position and continue to cover your movement.
Anyway, rant over. I just hope this gets implemented. It will make being a gunner on a big ship more fun imho :)