If I was ever building a FS2 ship, I'd stick a fighter reactor into each capship turret (since a fighter reactor is a lot smaller than most FS2 capship turrets anyway..it gots room).
With all power to weapons, that means each turret can lay a unholy ammount of smackdown!
That would be one friggin expensive ship if you're going to have as many reactors as weapons.
It'd probably be a maintenance nightmare as well.
However, It'd probably also kick ass.
Kayser turrets are actually less effective than they would seem, as they won't have their nice rapid-fire rate anymore, and their range is pitifully short for a capship weapon. They will probably be quite effective at killing fighters very close to the ship, but they'd probably be less effective than blobs at shooting down bombs. Morningstars and Maxims? Now that's a different story.