Was considering replacing one of my rooms in my lair today when I realized I don't know if the new room would even fit until I destroy the old room. It'd just be kind of nice to see how many units each type of room takes up before you place them in situations like this. For example, a normal, straight corrider would be 1x1 units. It's not even close to necessary, but it'd still be nice to have sometimes.

I've never played a biped, but I bet it'd be nice for plots, too, if it isn't a thing.