If your birds can see any bird from any position in the run, you need more clutter. Mini walls, pallets up of bricks, roosts, all make use of the third dimension height. Hidden feed stations where a bird can eat out of sight of the others is a good deal. Currently I have old hens, pullets at point of lay and chicks and a broody hen and a rooster. I feed in 3-4 different spots, most hidden from view of the other spots.
Another trick next time, is to turn out the older established hens, and then let the new hens loose in the coop/run. This allows them to explore the situation without being chased madly and attacked. If you want, go in and give them a little chase yourself, so they can find the hide outs. Let the big girls in just before dark, the urge to roost will compete with the urge to fight.
You are over the worst of it, but more stuff in the run is nearly as important as more room. If you think on it, if you add a pallet up on bricks you have added more usable space. You will think I am crazy, but when I am doing something like this integration, I rearrange the furniture. Chickens hate change, so when I am making a change, I try and change it all up at once. Kind of spreads the focus out.
Mrs K