Good to hear development is back on track!
Here's an item to add to your list of enhancements to consider: Add at least some of the features of the U2 Directory Manager to the DIR command. In particular, allow incremental search of filenames. Then a user can open a file by pressing the key combo they have assigned to the DIR command, then the first letter or two of the filename. Does it make sense to include only text-like files in the DIR listing, given that only those files can be viewed/edited? Or add a variant that does that?
Martin