RE: DEL key doesn't kill mouse-dragged region

[Drew Adams]

    I have tried using Transient-Mark mode occasionally, most recently in
    the past week.  It screws me because I use commands that operate on a
    region, in situations where normally they would work, but the mark is
    not active.
    
    Some time after the release, if someone wants to try to work on
    improving this, I could give it another try and note down the precise
    details.

Sounds good. (So much to do, after the release and before...)