I am sorry but this thread makes me cringe a little bit as a tank, dps, and a healer.

I always follow a general rule to face away from the group. Almost everything has a frontal attack why would you face that towards anyone especially with it's back against a wall. Some fights may call for this but they are extremely rare. So why not have the boss etc, positioned to have your healers/dps on flank or rear.

Also as tanks we can't position for every possible/potential aoe. DPS will have to get creative, and adjust accordingly. As a Dragoon I was able to find that the range of being on the flank/rear of enemies wasn't an exact science. There was all sorts of wiggle room to being able to get impulse drive or heavy thrust off. I would ask the tank to move or re-position, then yell at the tank to re-position but it wouldn't happen. So I would either steal threat intentionally or just suck it up.

As a healer when I watch the portrayed behaviors... they become a dead tank. Depending on the dungeon I will have an easier time healing two dps then a dumb tank and two dps due to bad positioning or merry go round behaviors. In Dzemael Darkhold I had a tank who wasn't tanking in the light. The dps followed me and waited for him to die then when everything came our direction we burned it down.

But lastly it isn't safe to assume that tanks know how to tank every fight. I screwed up IG's because I didn't know any better and no one cares to explain anything in CT. Sometimes a little guidance goes a long way.