Lokis.
Perhaps such a thing will come pass? Your Odin cannot be far from needing to pass the care of Asgard onto a more able party, and if your Thor is only just beginning his care of Midgard, he will likely be as reluctant as mine was to take on the burden of the throne.
I was acting as the Mother-All's emissary for some time, taking care of the issues that required more subtle care and diplomacy than the other Asgardians were capable of. But lately, I have been trying to help Kaplan clean up one of his messes.