Great work on making the new Moons armour degradable and at least the blood moon feels like it will be useful against the blood moon as well as npcs weak to crush. This should help to be a money sink for the game.
IMO all new BIS armour and any new armour should require a repair cost like Barrows and Moons armour. In fact all armour should require repair as no armour can realistically just automatically maintain itself with the beating we put it through.
Masori, Torva, Ancestral should all require upkeep and if it is too late since they are introduced already then any improvements to BIS should be degradable.
It's ridiculous how much money we bring in to the game with high alc since it just creates an uncontrollable amount of ingame money. Having a gold sink that is thematically realistic like maintaing gear just makes sense.
Having people use Barrows and Moons armour and get more used to the aspect of maintaining armour is a good first step and I think with some improvements to Barrows armour will help to get people using it more and getting more accustomed to paying to maintain their armour.