P: Allows Local images on a removable (CF Express) drive to be edited.

If you insert a camera card and attempt to edit images while still on the card.  Lightroom will permit this and writes XMP data back to the source volume.  Since Camera cards are often erased and reused, the image files and the edits are lost.

Lightroom needs to prohibit users from edits in the Local mode until the images have been copied to a permanent storage location.  The minimum solution should be a severe warning when ever the user attempts to access images on a camera card (SD, CF Express, XQD etc.)