Working across a large organisation inevitably leads to people using different drive letters when mapping drives/folders. This makes sharing workflows and macros with other teams more difficult and the first thing I do when creating a new workflow is change the dependencies to All UNC.
This suggestion is to offer the option to default all workflows to UNC via the user settings. Acknowledging that some users will prefer listing files by drive letter and other UNC, adding the option could make life a little bit easier for everyone.