Glad that you like the concept. And yes, I agree with you. In fact, that was already part of my consideration. In the balancing section on the post, I wrote this :
Based on the rating system that we have, we should limit the presence of Champion in a battle:
Bronze : 0
Silver : 1
Gold : 1
Diamond : 2
Champion : 2
Lol in my mind it started with Wood 0 and bronze 1 😅 my apologies then! Didn't read carefully enough.