I would add height. Since they use the roost bar, make one a foot or more higher to give them some options & maybe flying a little to get down. You could span a corner with a rod or 2x4 or wooden closet rod, that's the easiest, giving you the walls for support. If you're seriously going to add new birds, keep in mind to incorporate barriers and hiding spots as the flock gets used to them. I use old tires - stand them up, drive a fence stake to lean them on and wire together. The hen chasing the other has to climb through. But then they sometimes like to roost in & on them. Good luck!The main questions for this (got a bit sidetracked on the OP and in following posts) were:
a) what do you think of the stuff in there?
b) should I add/remove stuff, if so, what stuff?