I'd be happy converting honestly.
Taking away battleship status would be a boon to the Custodian. I'm just noticing it now that I plan on buying them, like I said, but the Custodian is like a totally different ship compared to the rest of the fleet, like a holdover from GW Tau.
My main issue is that the Custodian has battleship mobility, battleship price, and grand cruiser weapon ranges and defenses.
I don't see why I would ever take a Custodian, or see it as a real asset to my fleet compared to other choices. Id rather take many Protectors.