I would have those bees in a box! Probably requeened too, but in a box.
My mentor, Dr. Wilson of the USDA Bee Lab in Laramie, Wyoming was clear in his instruction about feral hives and the threat they can pose to spread American Foul Brood (AFB). The incidence of AFB has ebbed and flowed over time, but remains a threat to your hives and mine. With those colonies in boxes, you can inspect for foul brood and take appropriate action if it is found. Just my (minority) opinion Nugget Shooter.
Those colonies, in their natual state are a thing of beauty. :thumbsup: