Seems to me that the bees had not finished working that super which had already been partly filled w/ honey and it is late in the season for the drawing of comb. I don't expect much more comb to be drawn from now on unless I force the bees to do so, give them no other choice. And then still they may just pack the brood nest instead of building more comb to store honey.
You might be better off pulling that super of foundation from between the other boxes and allow your bees to do what is natural.
I cannot tell what you mean by "such little brood patterns". How large an area of brood is there on how many frames? Open brood as well as capped brood. Pictures of each frame w/ brood woulkd be nice if you can. Maybe take a ruler w/ you when you go back to look.
You might be better off pulling that super of foundation from between the other boxes and allow your bees to do what is natural.
I cannot tell what you mean by "such little brood patterns". How large an area of brood is there on how many frames? Open brood as well as capped brood. Pictures of each frame w/ brood woulkd be nice if you can. Maybe take a ruler w/ you when you go back to look.