Arena Change Idea.. zaul/chaze/rex is getting boring

I'd like to have a drastic change to the arena....

Only being allowed to undertake 5 battles with any toon in a 48 hour period. Ie if you use one set of toons on a Monday for all five battles, you need to use a different set of toons on the Tuesday, then on Wednesday your first set will available again.

This will promote diversity in team choice, reward those that invest in large squads, add tactical thinking over what toons to use and when... and in my mind be more fun!