I’m kinda unsure a about toilet n stuff, but I’d definitely like to see cleaning yourself - the game made a first step in this direction with cutting your hair/beard, now we’d need to be able to use soap with water in order to wash ourself. A bucket of Water would technically be enough to clean yourself, and I’d love to see actual working showers - either makeshift one, with a barrel of rainwater, or one in a vehicle - a good, long shower could however cost up to a tank of water, depending on the shower, the pressure and so on. Oh, and power obviously, for heating said water.
I believe shower/washing yourself was talked about before as well, and it was rejected due to the possible problems with morale, as a shower would need to give you a rather high/long lasting morale boost or it would be useless…still, a mod like this would be lovely. . . but I have the feeling this would have to be hardcoded somehow…?