The cowl armor take up both head and body slot. As a crafted item, this dramatically reduces its usefulness. Most because crafted items major selling point is materia binds and the cowl takes you lose a valuable head slot for more materia binds. I know to was already discussed having head materia able to bind to cowls, but who would still wear it. Still losing a slot for materia.
So I had an idea to have materia bind to gear what take up more than one slot, only cowl so far, makes the materia bonus a little stronger to compensate the loss of a slot. Not much stronger, like 20% or so stronger. I would like to see cowl have a little more desire on the market.