So I've been listening to the NOVA Squadron podcast about the Outryder Cup and it sounds like a good event.
Got me thinking ... what about a triathlon event for the three Star Wars miniatures games, where you play rounds of X-Wing, Armada, and Imperial Assault?
You could take a nod from the System Open and organize into pods of four, which gives three rounds -- randomly drawn, one game per round. Combine winners from each pod into groups of four until you reach final four.
Alternately, do a team game where each team has to field X-wing, Armada, and IA players ... though this doesn't require anyone to be individual "triathletes".