When tagging large numbers of files, it'd be handy to have some kind of CTRL + F style filter/search of the panes. Ideally it'd search the core metadata of each file/track/release and allow you to cycle through matches.

Definitely needs more thought to flesh out how this should work (e.g. should it obscure non-matching entries like a filter? or just search? which metadata should it be able to search in?)

(From http://bugs.musicbrainz.org/ticket/5993 but also requested earlier; probably within some of the mega-tickets in Trac)