Castrum is Dead, Castrum remains dead and we have killed it. Yet its shadow still looms :P

Honestly I do think this is a problem that needs to be addressed. And I think the best way to solve it might be to offside the mettle losses and add Lockboxes and Memory rewards based on how well the party did. Like a total of 6 bitters and 20 of the FATE ones assuming all three bosses (Door Bosses, Adramalech and Lyon and pet) are cleared, or have the Fate ones be obtained from clearing the bosses and the Bitters be based on how many prisoner are free of their bindings instead of their mortal coils.

Failing that they could put it and Baldesion Arsenal on the DF/RF