My issue with that is: It will only reward the same names over and over again. "Dueling" in this game is a practiced skillset that differs from general combat. It's a very specific set of timings and techniques that might get you killed in the MA during a normal engagement. In short, people train themselves to fly and fight that way, as in the DA. The same people that have learned how to game that particular game are going to have an edge up on ANY johnny-come-lately that might try their hat at a competition -- or it might just dissuade people from participating at all.
It caters to a specific sub-set, is what I mean, and might leave the rest out.