Since end-game religious weapons are still meh and the early religious weapons are even more meh, I suggest the following:
Epic versions of early religious weapons. You put the weapon on the blacksmith bench or altar and reforge it with new materials. This would make the Hallowed effect against undead and demons viable late game if that’s even a thing, that’s what I’ve heard.
Ritual weapons. You craft the end-game weapon or a this creates a special version, regardless it takes a while to craft and gives a log notification. It creates a timed version like the Claws of Jehb, but the weapon is vastly powerful with special effects.