Right now in the item view it is really helpful to see what tags are attached to a given item.
It would also be helpful to see what lists the item is a part of. For example, if I have lists corresponding to book chapters and articles, it would be great to be able to open an item and see that I'm using it as evidence in three chapters and five articles. (That's a lot - so I might want to think about why I'm relying so heavily on this one bit of documentary evidence - maybe there is a good reason and maybe not). It would also be helpful to open an item and see that I haven't slotted it anywhere yet.