My personal home library consists of hardback books, paperback books, DVDs, VHS tapes, CDs, etc. I would like to see the ability to add different categories in LibraryThing.
The BIGGEST issue I have had so far is LibraryThing dropping off entries. I scan and save an item but when I look for it later, it isn't listed anymore. This is becoming a huge issue as my library grows and I depend on LibraryThing to know what I have and what I still need.
Update: I had to delete all of our (~2k) movies out of LT, because the list was never completely accurate. I have downloaded another app to track our collections of everything but books. The updates that LibraryThing DESPERATELY needs are: ability to personalize categories, a loaned to tracker, and the ability to see more detail, such as whether a book is a paperback, hardback or ebook. Developers — PLEASE listen to your customers! We are willing to pay for a PRO version with these features!