Your post # 13, is on the money IMO.
I stopped by mann lake the other day after delivering bulk bees up north. One guy in there was asking me about my bulk cages. Duane said that there was a study out, that hives could use 12 pounds of pollen sub each.
I dont see many keepers putting on more than 2-3 pounds.
I have yet seen a clapse in keepers that put on 10 pluse.
We seem to have a pattern growing here.