We Need to Start Expecting Mid-Level Sprouts to Play Better

[Shibi]

OP, it's not a sin worthy of a new thread. It's just not that grave.

...You SHOULD be using at least one mitigation per mob pull...

You - as the healer - SHOULD be capable to cover stupid in 4-man casual content without too much trouble.

(Mind you that 16 vulnstack spintank I got once was really very hard to keep up, but I did it without a wipe).

You can ask them to do x, y, or z, and that's all you can do outside of tripping your personal pain-points for disband/abandon.