regarding green dps that lets people die, i think we should all look at Assize
a skill that heals and does damage. green dps players use it on cooldown and its enough to keep party members up for most mechanics.
if we had more skills that healed the party and did damage, suddenly tunnel visioning into dps becomes way less detrimental. of course it wont save the most hopeless cases, but having skills that heal and do damage would give such players higher chances to clear. perhaps even an incentive to heal too, as afflatus misery does too.