I hope this will make sense and please realize I love the percentage math involved in this game along with time limits.
I propose a different Wizard and Team competition, frankly arena doesn't appeal to me as a team event.
Using a tower model, and your fantastic math skills, could you design a trials competition that would challenge; any Wizard, any variable of two Wizards, any variable of three...etc... Make the results post able in a number equal to the total amount of; time spent, cards used and subtract say one minute for each level achieved. Low number is King
Just thinking; pip to damage ratio, handicap for highest level or lowest level Wizard, handicap for healing cards used..etc...
I think you know where I'm going and if you need more just let me know. This would be a very innovative strategy and team building competition. Thanks for you time and I enjoy this game.
