I noticed that when I try to prioritize my resources I have to pull the volumes of Luther's Works over to the priority list one volume at a time. For other collections I only need to pull over one volume and the whole collection is added to the list.
I know that Luther's Works isn't purely a commentary set, but so much of it is commentary material that it would be nice to be able to either (1) setup Luther's Works as a whole collection or (2) allow prioritization of resources based on collections/tags.