I got an idea which allows you to add a person to a list of people who are allowed to update certain difficulties (their own guest difficulties) so they can update the map with mods / improvements when the original uploader isnt on or able to update the map.
The only cons I can think of is someone suddenly not caring about the map (or even the original uploader) and making their gd unrankable, but the issue would be able to be solved by removing the persons privileges
The only cons I can think of is someone suddenly not caring about the map (or even the original uploader) and making their gd unrankable, but the issue would be able to be solved by removing the persons privileges