Firstival i’m not absolutelly sure if the decay on buildings is actually ingame but it seems to me like it is.
I’ve recently build myself a base in a cave on vanilla server, and to my surprise all the walls had pretty significant decay, even reinforced was like 1hp/hour
I think metal/reinforced or even stone shouln’t have a decay at all (you can imagine how obnoxious would be to have to go over each and every part of your base every time you log in, let alone in some cases u can’t even reach some parts of your base with a hammer)
Twig tier on the other hand should decay completelly in ~6 irl hours (imo) would help with server performance and also would be realistic
wooden tier should have some less significant decay ~72 irl hours?