Ideas on the table:
-adding 1-2 GCs
-changing the turret upgrade to 10pts (considering there are integrated +1 turrets for capital ships)
Anything else?
I think Bakka shouldn't get all the GCs because it seems like the Bastion fleet is their home and one of the primary bonuses of the Bastion fleet. The Bastion fleet represents "Battlefleeets Cadia, Agripinaa, Scarus and
Corona, in particular." So, the Bastion fleet represents a pretty sizable amount. Bakka can bring them in a reserve ship. I think it would be better to keep them at that arms length.
The turret upgrade, which is essentially a 2nd additional turret, has replaced the ability to easily take a launch bay cruiser. Now, any type of carrier is really hard to get, beside the Emperor with Rath (which is really expensive). That second turret primarily helps them against bombers but actually isn't super effective against most things, especially against Necrons (who turrets don't matter against), the Eldars (turrets only hitting on 6+). Keeping the turret upgrade at 5pts seems fine.