Until I imported notes from L3, the file order in L4 was a minor irritant. Now I find that I have to either (1) remember about when I used it in relationship to my other files or (2) remember it's name accurately or (3) read a list and hope I don't miss it the first time through.
My preference would be alphabetic within file type. If others demand it ... something like the 3 most recently used followed by alphabetic within type.
Note that I'm moving one part of the original message to new beta bug ...

