Dedicated bedrooms are a waste of space.After all, we only use them at night - and then we're unconscious (!)
Why not have beds that pull down out of the wall and get put up again during the day so that the room can be used as an office or whatever?
We could then get away with smaller houses too.
And smaller houses need smaller blocks. Or the same sized blocks with more outdoor space. Even better. More room for trees.
No bedrooms: good for us, good for the environment.