Is there some unspoken rule to not use Esuna/Leech?

[seida]

So.. you're saying that grabbing adds isn't important? or are you saying you prefer dead healers? I'm not entirely sure what it is you think isn't important.

Its really as simple as this:

A Pacified tank (WAR) cannot grab adds, nor can they tank swap for mechanics that necessitate it. I'll give you one guess as to who those adds are going to make a run for though while your warriors are asking for that esuna/leeches.

Your Healers

Sure, on a rare occasion like that I would try, but chances are I would still be in the middle of casting something, as I generally don't stand around doing nothing.

Maybe you could also consider putting off using beserk if it will result in you not being able to grab important adds? It's 5 seconds!