So I came back yesterday after being away for every other day of patch week having a wedding + honeymoon, managed to knock out A5-A8 and Seph NM before reset.
Thoughts:
These fights are fucking long.
I kind of don't see us downing these in ~2 minutes like we could A1-A4, even in i240 gear, but maybe I'm just having trouble adopting that future PoV.
The few sources of Materia Grade V are simply a chore to farm to slot up our temporary i220 gear, then progression i230 gear, and then BiS i240 gear.
The game really, really needs some kind of Jewelcrafting-like profession like in WoW and provide the illusion of choice with colored materia slots and some meta surrounding that. Right now it's just saying "congrats on your piece of gear, enjoy some mandatory Diadem."