I've skimmed through a good portion of this thread and while I understand the frustrations (Healer Main, UCOB downed), I heavily believe that if they add much more challenge to Healers or healing in general (in almost any form), there is a high chance more players will leave the role. PF already struggles to fill Healer and Tank roles and many players actually get performance anxiety as is. A bad healer can wipe your raid consistently, and there's ALOT of underperforming healers already. To take the chance on making these roles more complicated will definitely backfire on the community as a whole and if history shows us, the idea is not even supported by the community overall.