I have had a similar thought for a contest albeit with a different set of rules and parameters.
Id like to see a contest where everyone flew the same model. The exact SAME model.. not build a variation, however a single model, that everyone gets 2 flights on.
No test flights, engine is setup by the contest director or whoever does the judges warm up. Its identical for everyone. You don't even allow the trimming out of the handle. - Its just pick up the handle and explode into a pattern.
Highest score wins. - It would be who could get their head around the new setup the fastest, and adapt to the change the quickest.
Interesting concept.
Alternatively to that - you could allow each flier to have 1 practice flight before-hand. then Launch into the contest.