I'm posting this as an idea because I can't find anything about it, maybe I'm just not searching properly.
But in Finder or Explorer when browsing files you can obviously press a letter on the keyboard and if they're in alphabetical order it'll go straight to the first file with that letter. It would appear (though correct me if I'm wrong) that you can't do that in Media Browser in Premiere Pro?
We edit directly off servers with heaps of clients projects on them, and it'd save soooo much time when I'm linking assets or finding files if when I get to the clients folder I could go straight to a certain letter rather than scrolling heaps until I find it.