A question/suggstion - is it possible to add hot water 'capacity' to bathtubs and stalls (akin to Radiators) that would, first, heat up the room with the bath in it, and second, give a slightly higher 'squeaky clean' mood boost (say, 1 mood higher than it is right now) if the colonist bathed in a bath with some hot water in it, and a slightly smaller mood boost (say, 1 mood lower than now) if the bath had 0 hot water in it? Makes high energy/resource consumption stations such as boilers noticeably more useful, in my opinion.

Another thought - add two additional 1x1 crafting stations with the option to Clean clothing. Effectively, remove the [D] (worn by a corpse) tag from clothing after a long cleaning process. First station, manual laundry rack, can have two versions - one that is built by any water body, the other one has a separate water tank that is hooked to water supply; the other option is a laundry machine that can only be hooked to a pipe and requires power, but is also noticeably faster. An added cool bonus would be if you could also make hot water in the system affect the tank-equipped and the automatic laundry stations, making them work faster.