2 New battle modes
A ) A New PVP thats matches based on the teams power.
This is not a replacement for league PVP, but would be an alternative PVP that would allow players to test and use characters in fairer match ups.
No need for high level rewards, just some gold per battle.
B ) Option to battle Club teammates Tournament defense team. This would promote better camaraderie between club mates and encourage theorycrafting. There would be no rewards just the option to battle when you select the player in the club house.