King of Sicily

I think this is working. It gives claims to all duchies in sicily to
whoever controls a significant portion of the island. Currently it's
like this: you must either control lilybaeum, elymians, himera and
selinus OR syracuse, sicels, gela and selinus. Hopefully this will
encourage some expansionism in the region and we'll have some syracuse
vs carthage action going on. Do test it out, though.