Somehow I just cannot imagine a fully independent Greenland being a kingdom. Coming from a royalist & an Englishman like me that may very well surprise you, but I just don't believe there's any chance for a Kingdom of Greenland, so ... Besides, I already live in Dublin, a capital of Ireland, yet another country which used to be a (part of a) monarchy once [there were even the Irish kingdoms once], which has chosen to become a republic soon after the full independence from UK. Don't act so surprised! I'm a royalist, but also a realist! :-P