Me thinks Terran should spread the word they need a real ruler. Marco would be interested. (Can't do worse than those before him.)
The problem, as Scarlett's character in Terran has alluded to many times, is that the position is pretty redundant and powerless. I suppose unless someone with a very big personality got in there. Even then, it would be frustrating for them.
The realm is run by the Senate, and specifically those Senators who care to contribute, which means the Chief Magistrate's job is primarily foreign relations/diplomacy.... however, that is mostly de facto dominated by Hireshmont and the Elder representation in the 'Moot.
It's a thankless position with little point and not much fun. Plus you lose your landed title.