And this is a problem because?
Well, if you like seeing your cruisers blown away by AC while they use guns to chew up your escorts, it's no problem at all.
And you better believe that as soon as that first group of AC pulls the FDT into the attack, any other group is going to try as hard as possible to make sure the first base they hit is the one that doesn't have the turrets helping.
You don't have to give every turret you have to the target. Squadron your ships in base to base contact, with frigs in b2b contact with ships like grand cruisers or battleships. Make sure to manuver so that nearby squadrons can keep supporting fire on one another.
This effectively gives most BBs 8 or 9 turrets, most cruisers at least 6 as long as you keep in wedge formations and don't AAF. Keep squadrons within 15 cm of each other so the squadron on either side can support if needed. If you're depending on FDT, the only SO's you should ever use are LO, RO, and BFI. Move forward in wedges and you'll steam roller ord dependent fleets.
Not free since one can take Bakka ships as reserves.
I'd give them it free too. If the whole fleet isn't using them, it gets pretty diluted as anyone who's had an admech ship with them can tell you, so as reserves they really don't have the big impact you might think they would.