let creatures use their rooms

idea: let creatures use their rooms ,so the rooms are not empty all the time(like in the beginning of this game) .cultist should read books,crackpots (fake)brew potions ,succubus torture eachother ... ... ... (to lvl up or not ,just fill the rooms with life.)

if u want them to lvl up in the barracks then make them use their rooms after reaching lvl10 or make them use their rooms when idleing,but i think they should do things to lvl up they are doing in fight , like learning spells (cultist) , brew potion( crackpot) . or split their lvling , lvl 1-5 in their own rooms ,lvl 6-10 in barracks, or so