I see nothing wrong with having a map graveyarded. If the community really loves it, it'll play it again and again. Loved and Ranked are useless titles.
If, for whatever reason, you wanted the map to have a scoreboard (which I don't understand), and you can't get it loved because the creator is not active, then that's an issue with the loved system. Claiming others' maps is a band-aid fix to the loved problem. I don't know the requirements for loved, but if it requires the creator to be active, then love is broken. Go fix loved instead of making it possible to steal others' hard work.