You have a great open-air coop - does the litter build up against the hardware cloth portion of the coop? Do you have to step-up onto that foot of litter when you enter?
We put a solid lining around the bottom of the coop. It hasn't worked 100% the way we wanted it to, but It's doing reasonably well.
Yes, I do have to step up, especially on the downhill side. I have to periodically shovel the litter back up the hill when it's migrated down too far.