Ok one minor thing that i find bothering is the fact that the Shadow Crescent Helm cannot have a facial accessory yet the Cobalt Helms, which happen to be the exact same design, can have a facial accessory attachment and i think the Shadow Crescent Helm with the prismatic glow eyes will look so amazing but unfortunately that cannot happen.
that would have to be done for a lot of things actually. do a bit of reserch and you will see that it's not only that one with missing slots.