I wish I had explored this more while it was in experimental but I just didn't quite get that far. Calculating mass based on exact block shapes seems like a great system, but basing the hit points on that same scale kind of lowers armor values too far. Understanding that future updates might make this system make more sense, from what we have and know right now, I feel like this change maybe took realism a little too far. My thought was perhaps still calculate based on shape but alter the calculation so that the smallest shape has an armor value of half that of the full block. In my opinion, this would be a good balance.