Average item level calculation needs fixing, as does lv50 gear progression

[melflomil]

It's completely doable to tank the dungeons you mention with minimum requirement (ilvl 70).

it is possible. I don't main tank and mine is at ilvl93. The mobs in hullbreaker hit pretty damn hard because my life was almost always around 30/40%. Not sure if was the lack of healing or poorly time defensive cool downs but I can't see anyone doing mass pulls anytime soon.