If it were to be a team based competition this is what I would suggest.
Each team has an accomplished High Power, Cowboy, USPSA, 3 Gunner, Precision Rifle, Sporting Clays, etc shooter on their team. The teams compete in events against each other in all these different disciplines. Here's the catch, the expert in that sport doesn't shoot, its his job to be the coach/trainer for the others prior to the event.
Now this is a good idea!!!!