I like it not being tied to a subsystem I don't care about. Like, I hate Palace of the dead knockoffs and am not convinced by the deep dungeon we got during EW, if I was forced to do either or both, I'd probably have a miserable time, while, when it's tied to tomestones, at least I can just spam crystalline conflict and frontline for it, which is content I'm happy to participate in regardless of reward. Maybe the tomestone skin is a bit "gamey" for something that should be special, but the gameplay effect of "do what you like for your relic" should absolutely be preserved