Logos 3 had a helpful report under Tools -> Library Management -> "Resources and Collections" that doesn't seem to exist in Logos 5. Now Logos 5 is far more sophisticated in how you can find/organize resources through collections, type, tags, prioritize, favorites, and rating. However, I really liked the Logos 3 report because it was very easy to scan the report and find resources I have not put into one of my own collections.
I have about 55 collections in which I group all my books. The reason being is because I have over 1600 resources, and it is very difficult to grasp or remember them all. What I found, is that after a while I was only really using about 100 resources, and overlooking many excellent resources I didn't realize (or forgotten) that I had. So, I decided to split all my resources into the different collections, which really familiarized myself with my resources, and when I am studying lets say something in theology, I can easily peruse all the titles in my theology collection.
The only way I can see what books are not in a collection in Logos 5, is to open up the library tab, click on the Resource Information button, and view the "Collections" section. I can only do this one book at a time. Is there a better way in Logos 5 to generate a report that will show all resources and what collections they belong to, like in Logos 3?