Building "condos" has some apparent advantages: less room is occupied and, most importantly, less heat loss. As bees can only raise as much brood as they can keep warm, the issue of heat loss seems critical in spring colony build-up, as well as wintering survival (hence why some have double-nucs). After considering that double-nucs were already in use, and seeing various "queen castles", I was wondering: why not the same with nucs?
I was thinking of something along the lines of two back-to-back rows of 7-deep frame nucs, so that once colonies are reaching full size, I can transfer four frames into nuc boxes for sale, shake a little extra bees in them, and then I'd still have a 3-frame nuc to later install a royal cell or queen into to reboot the colony. I'm thinking that perhaps follower boards, like in top-bar hives, could be placed, but as must walls would be dividing colonies the only use for those would probably be at the extremities.
I always try to think "outside the box", which can sometimes result in silly ideas. I was wondering what other people might think of this? Would this setup increase spring-time build-up? What about in summer? Would it over-heat, or would the reduced heat loss at night still prove beneficial?