What about a native feature which
1. changes the naming behaviour from `untitled, untitled, ...` to `untitled 1, untitled 2, ...`, and 2. keeps all those files opened in the editor after restart, without being forced to save them on disk.
**Reason**
People may use these untitled files just for temporarily editing or storing anything, without the need to save it into a file. It is also more comfortable to not be forced to save it into a specific file, if keeping it in the editor is fine. I also think it is more robust to not delete anything if not explicitly asked to do that.
This is by the way the default behaviour from Notepad++, this is where I know it from.