I love the idea of being able to designate uses and specific sims for specific rooms! This is actually something I've been thinking about too lately.
One thing I really wish we could do (with the "take shoes off" feature from Snowy Escape) is designate on a room-by-room basis whether the sims should wear shoes, wear slippers, or go barefoot. In my Japanese style house, I really want my sims to wear slippers in the rooms with hard-wood or tile floors, and go barefoot (in socks) in the rooms with tatami mat floors. But unfortunately only one or the other can be chosen for the whole house. I chose slippers, because most of the floors are wood or tile, but I cringe every time I see them walking on the tatami mats with their slippers on. Being able to designate the rule room by room would be wonderful.
