I use Syncthing to transfer bulky files to and from a friend.
It would be very useful to have a special folder type for this with “move” semantics:
When I create a file and it is synced to the/all targets, it should automatically be delete on my side. Same for the other direction.
With the current version, the file is using space on my side until the receiving user moves it out of the Syncthing folder.
Also the current situation is only practical for 2 parties. With more than one recipient, nobody knowns when to delete the file. A transfer/move semantic would solve this.
What still would be unsolved is to selectively send to one of several recipients without have a separate folder for each pair of users.
Not when you want to send files between computers located on the opposite side of the globe . Syncthing’s ability to connect, keep the connection, and reconnect even in the worst circumstances is its great advantage. Not to mention that all of the above is done 100% automatically, with no user intervention required.