Everyone always talks about tanks, but healer performance matters too

As a tank who has hit level 60 and has his guild have Molten core and Onyxia on farm, I really don't have much things left to do in this game. Every week first couple days I grind honor queuing up AV and once I hit my honor cap and done with my weekly raid I have no other activity to do inside the game.

Since I'm playing a warrior, my gold farming activities are very limited, and one of my main gold incomes is tanking Stratholme Living for getting prio on 1st orb drop.

So far I have done plenty of strat living runs, and came across many different healers. Most people say healer performance does not matter as long as everyone in the group is alive, and while that is somewhat true in raids, the healer performance matters A LOT in dungeons.

A good, competent healer can make the life of a tank so much easier. Of course the gear is also a factor, like a healer who is bissed out with MC gear showing up with a benediction is going to make you have way easier time than a 58 priest who is there to get his quests done, but there are also some gameplay decisions that can make you more competent as a healer. I'm here to shine light on some of those:

1) When I'm pulling a pack that has ranged/caster mobs in it and I'm trying to LoS them, if you heal or shield me before the mob comes in my melee range, you are going to have aggro of the said ranged mob via healing aggro. I cannot help you in this situation, so you should LoS the mob yourself and let it come into my range, and I will taunt it off of you. Please don't just stand there and tank 10 frostbolts in your face and expect someone to do something.

2) As soon as you leave combat, you should start getting ready for the next pull. I have an addon that tracks healer mana to avoid pulling when healer is low, and it is really annoying to see my healer at %4 mana looting corpses, enjoying the view, looking around for 10 seconds before he finally sits down to drink after a pull. Experienced healers even walk up to the next pack and start drinking there, so they can have couple more gulps in while I start engaging the next pack.

3) Having knowledge about who to heal, when to heal. If there is a pack of 6+ mobs being pulled, and the warlock in the group starts hellfiring in the middle of them 2 seconds after the pull, you should expect them to pull threat, and start casting shields or heals on them. Unless you want to teach them a lesson about not overaggroing, of course. Then you can just let them die.