Hey Chip, I wonder if there isn't something to it.
I have a bunch of nucs that I started late, too late to sell. I am amazed at how quickly they have mushroomed. I am scrambling and have just built 15 second story five frame boxes, primed and painted them and they are all on already. I need to build another 10 or so and that should see me head into winter with around 30 double deep 5 frame nucs. The bees seem to really thrive when not overwhelmed with too much space.