It’d be cool just for fun.
But I don’t see the practice aspect of it when raids are a total sham and simply comes down to if u get the matching color tiles you need or not. It’s mere luck. I’ve done so many raids where I’ll have two healers and the opponent has 1. Both of my healers will be killed off before they have a chance to gain half the mana needed to heal. Meanwhile, in the same time frame, the opponents healers generated enough mana to heal 2-3 times.
I stopped doing raids altogether; it’s uneven, unfair and a waste of time.