Okay, the ability to put your houseguests on paths is cool and ads a touch of realism. But with the exception of "animal" like ones (Caska, who will sit or lie down sometimes), they never sit down.

It'd be nice if you could set them up to sit on chairs or lounge/lie on couches/beds sometimes. You could have guests around a dinner table, and once in a while one or more might get up and wander off somewhere. Or you could have them sitting in a lounge area, as if they were conversing, get up, wander over to another group, congregate in the kitchen etc.