I think it would be nice to be able to search for, and highlight, balloon references on assembly drawings.
For example, if your checking to see if every item has been identified, you may not want to spend valuable time in searching for Item 251 (to pick a random number). - particularly on a large assy drawing
Maybe even if you were to enter 251 in the balloon reference search field, you could be given information further info, like number of times it's been identified, on what page (assuming multi-page drawings).
Just a thought