most builds use it for OA, the mana regen isn’t horrible either
Haven adds highly valuable health and heal increase, well worth on more than just shield builds
it’s an absorb skill, with an attached cc res buff (and more oa), it’s handy even on non retal builds
no, they stack, like all buff components
the chest is fine, build has decent armour and phys res; and remember there are totally fine melee builds out there with sub 2k armour