Shaman tank category for classic?

Hey any chance you could throw in a damage done:taken ratio or something simple like that to categorise enhancement tanks correctly as a tank and not DPS please?

Yes that would be great! there are many of us and it would be really useful to have use properly categorized for the fights. I think the > 50% of the boss melee attacks should work perfectly to categorize enhancement shamans as tank.

Shaman tanks are everywhere it seems!