Hat and legs are the only real good pieces of af2 for blm.
The feet are meh, yigit are way better, the conserve mp doesn't kick in often enough (more than it already did), I guess if you're doing non-nuking stuff could be a macro in pieces.
Gloves suck, zenith mitts/+1 are better, though they have nice dark magic skill, it's not the world's most important piece.
Body has refresh, other stats can be beat by weskit+eliteberet/af2 option, black cloak accomplishes the exact same as the af2 body. (Hint: never nuke in either black cloak or af2 body)
Legs are the best piece of blm af2, although very situational, the bonus is significant, one of the best damage boosters in the game to a spell.
Hat has a nice chunk of elemental skill, though due to diminishing results, you can stick elemental elsewhere and use an elite beret and accomplish the same. The nice thing about hat is it lets you hit a target amount of skill with less item slots, so you can focus on adding dmg on other slots rather than skill. (lol druid slops)
Belt is nice for nuking for a high number, other than that, penitent's rope is much better. I'd only use belt in manaburns/solo, or situations where me getting hate is not a bad thing.
So for the hat, an elite beret/+1 is comparable, and for the legs, mahatma slops do an ok job, just won't be able to do awe-inspiring numbers on thunder/ice days. Everything else isn't that great in the first place.