A question: What makes a Healer "easy/simple" or "hard/complex"?

[Recon1o6]

Yeh I'm not suggesting that the healers are entirely responsible for mitigation for the tanks, just that it'd be an interesting extra thing you could do, like how the tanks have the option to use mit on each other rather than themselves

and to keep the balance, WHM can get a 3rd charge of Benison that we didn't ask for/need

surely it would be another aquaveil charge?