In Britain I'd support restoration of power (which is currently held by the German House of Saxo-Coburg-Gotha) to the Jacobites. In the US (which doesn't have a monarchy properly speaking) a monarchy would probably arise from the present political/financial elite. I would support no one presently in politics for the post, except the Paul family (which would be most likely -- support for aristocratic rule is surprisingly enough most common among Hoppean libertarians within the Mises institute, and Rand Paul could perhaps ride the coattails of a Tea Party movement that gained momentum to the presidency), and perhaps the Forbes family. Among business elites I'd support a Buffet monarchy.Would you support re-instituting political power to the royal family in Britain? They are genetically representative of a past successful monarchy.
In Puerto Rico (my own homeland), the best candidates for an emerging royal family are actually my own. I'm related to the first elected governor of Puerto Rico, and directly descended from the founders of Popular, Inc., the biggest financial conglomerate in the Caribbean.