Information to keep you busy in a queue
 

In Emule when you aren't downloading, it keeps a track of the number of people who have you on their queue so that you can rest assured that the file will finish and these people exist. In Limewire you have no indication how many people your computer has found with a file, if they have it complete or not, and in how many queues you are waiting. You can even list them!
This would be useful if it was added.