I know that this may be a bit difficult to do, but maybe you could have a decoration modifier included with a config file for which blocks count as decoration blocks? I think it would add an extra resource management aspect, in addition to an extra feeling of giving villagers basic human decency.

Wanted too suggest this too. This should be an optional way to further boost villager comfort, only if all other needs are satisfied. Not sure about the scaling of sleep and outside deprivation, but potentialy this could allow to just spam decor to circumvent the other factors.

sorry for getting back to you guys so late, but yes! this is exactly what the next update of the mod is gonna be about