I have no quarell witht he PF CnC. (are we having flotillas without PFTs?)
So far as other ships are concerned, I think what I suggested in another thread is simpler.
All fleets must be Commanded by a Command vessel
Command vessel (defined as Command in title (of the ship), any Carrier/PFT, any BCH, DN,BB) only one per fleet.
any one or two ships of same or smaller hull type.
So this means you cannot have multiple Carriers, BCHs, DNs etc as they are command vessels, You can have 2 Escorts and most CVs had two (SFB lore wise). You can have line, or "specialty" as second or third ships. So a D7C, with D5D and D5E is legal, but a D7C and D5C is not. No multiple PFTs or CV/As or CCZs.
It's less restrictive also.