It is a great run! Have you considered putting translucent fiberglass panels (the wavy stuff) over at least part of the run, like where the chickens come out of the coop? It would be nice to have a dry and not snow covered part of the run even though the coop is clearly very large. In bad weather my girls will hang in the barn alley (their run), never going in the coop during daylight hours except to eat, drink, lay an egg.
I lock up the birds every night. The coop is like a fort to get into so we didin't spend a lot on making the run animal proof. Just enough to keep the chickens in. Even if a predator gets in the run it isnt getting in the coop. Seemsd the biggest mistake people made was not secure their coop well enough. So we went a tad overboard on the actual coop but under dod the run. Lol We also have a dog who goes nuts if anything is in the yard. One night he was going nuts at the back door at 3 am open the door ad he went straight towards the coop.
Hate to be the bearer of bad news, but an awful lot of people who lose chickens, lose them to their own dogs during the day. Even if you aren't concerned about a daytime coon attack on a bird sleeping against the chicken wire, anyone's loose dog, or a wild canine that spies the buffet will be through that chicken wire in seconds. Minimally I would cover it with welded wire field fence up to the horizontal piece.
Had mine for anywar and never had an issue except a week ago when I chased off a hawk. ThAts when we covered the run. I had 4 that could get out and my rooster (who is a giant and over 10 lbs) couldnt get out to protect her. Luckily I scared off the hawk and the hen was too heavy tl carry off. I havw zero evidents of a preditor even attempting to get in my run. We have coyotes but very very rarely hear or see them. Could be bc we are only 100 yards from the road and te only things around my house is corn and soybean fields. Then on the other side of the river is woods that is protected so plenty of hunting for them. I am working on a meat bird coop. I may be more aggressive ln fencing for them since I am dojng a hoop coop.
I saw a coyote at dusk <100' from the road coming home from my in-laws' at Christmas.