As we know, the ivs of the reward pokemons in Community Combat tournaments are 2*(0 - 31) and 4*29, which means they are not perfect ivs.
In addition, players who can win a tournament are usually experienced and have played for long, which means the ivs of their pokemons would probably be impeccable (5*31 or 6*31). Therefore, I believe these imperfect pokemons are meaningless and players may lack the enthusiasm to participate in the CC tournaments, especially in NU, UU, and Doubles tires. The only driving force that I can think of it these pokemons are in master balls.
With that been said, my suggestion is:
Decrease the $800,000 reward to $700,000;
Alter the reward pokemons' ivs to 5 * (0 - 31), or even 3 * 31 + 2* 30.