Biggest pet peeves when it comes to dungeon runs?

[Xtrasweettea]

So, why is putting regen up before pack has been AOEd at least once by a tank a thing? The tank hasn't taken damage up to this point. Regen doesn't get rollover minutes and any overheal doesn't turn into a shield.

What is the goal of prepull regen or regen prior to first tank AOE? Is it peace of mind? Is that piece of mind ok with the risk of a chance for the mobs that have not been AOEd by the tank (those mobs do not have the modified agro from tank stance affecting them, since it is link agro) to agro you instead? I am honestly curious, I am not trying to be a jerk or anything.

My take is:

• The tank should be sprinting before the first pack, establish that hate on all mobs in one AOE, and maybe using a defensive oGCD (like Arm's Length, the game's sexiest defensive cooldown) and use distance to prevent damage.
• Healers should be keeping up with sprint and start applying dots to the pack.
• If healers feel like they have to regen, do it after the AOE and when everyone is moving. Or better yet, use something like Divine Benison, which generates less agro and is an oGCD. Meaning WHMs can DB the tank and Dia mob without having to deal with global cooldown for one Dia.

This is not a back-seat driver take either. This is what I do when I play WHM and I have no problem keeping even the derpiest of tanks alive.

So yeah, the idea of prepulling or pre-tank AOE regen baffles me.