Healers: It won't be us.
If it persists (like they poorly use CC, or keep standing in AoE), I simply stop healing them, and explain why. Too bad healer hit is zero, because I step in to bind or to hex, but misses are frustrating (btw, do dps suffer this missing?).
I've gotten most of my guildmates in the habit of not LKing dungeons now, but PUGs are usually awful. In my 1 heroic clear (pinnacle) we wiped on the last boss once, then downed him. 1st time the pug lock and hunter failed to get into the pyramid. 2nd time the lock failed again. THAT should give a debuff to queueing, not leaving a terrible group.
But my experience has taught me to never queue solo (as heals). It's just not worth it. And I rarely queue without a guild tank, either.
The bad thing about the new healing/encounter system is that, when it's done well, it's so damn boring to heal.
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