Thank you very much for the nice and detailed feedback :-).
I'm really happy to hear that you like the graphics because I spend a lot of time with them. So it is good to hear that they do their job meaning: reducing the morbidness.
Actually the graveyard was planned to be way bigger - with more graves. After some playtesting I noticed that they made no sense and so sticked to the size as it is right now. I thought about a self-heal-function in the game but decided to not have it. Otherwise the heal-upgrade would become useless. BUT anyway: the idea of having a room sounds interessting! I will keep thinking about that. Having buildings on the graveyard is something I really would love to see!