There's pushback on the killer feature that I want. I want to be able to sync photos from my phone and clear them automatically so I don't run out of room. I've been told there are ways to do this but they all feel brittle. Syncthing should be in a position to do this safely. E.g., I have 3 destinations and set a policy that photos can be cleared from my phone when they've reached 2/3.
On the plus side, the source is all there and it's easy to compile, so that 1% shouldn't be difficult to fill by someone with a little knowledge.
Another approach would be to push the files from Syncthing to borg (borgmatic can do replicas) https://torsion.org/borgmatic/
i want to use a tool that is reliable, not hack together a custom solution. if i did that, why even bother with syncthing?
i solve that by setting ignore delete on the backup destination, but that is an advanced setting hidden away that you have remember to turn on, and once you do and actually delete something from the source you keep getting that warning that the folder is out of sync.
so yeah, i want "backup" as a core feature with the appropriate settings as a default