They all have perches and I move them by myself even with 4 metres of run attached, I find their mobility their big bonus. The main design flaw in my opinion is that the door handle is on the opposite side of the nest box, so you can't place it with one side against a wall as you need access to both sides. But then most of mine are in a field anyway.
Ours occasionally sleep in the nest box if I fill it up too high with bedding - tipping the bag with shavings out in the nest box thinking there's not much left in it but turns out to be more than I thought.
Red mite sorted very easily, though, and so easy to keep clean that I'll never have a wooden one again.