Even without clipping issues coming into it, I think circlets look nicer than wearing helmets anyway. They're a good option to at least look a little bit defensive without covering up your character's face and hair. (Plus it's all just illusion anyway, right? I'm still really wearing a sensible helmet that'll protect my head, you just can't see it...)
I'm pretty sure they said during the Viera reveal segment that they've made that outfit the standard racial gear now.
Obviously they're going to recycle designs where they can, but it would be nice for it to be at least somewhat varied. It doesn't match the style of the other races' starter gear.
Unless it's their version of the Hempen underwear set, but I'm sure that's unlikely.
With the addition of Ivalice and the Viera, let alone the NieR raid, I think we're beyond being able to claim that adding a race from a different FF game won't happen because it'll hurt FFXIV's lore.
(Count me among those objecting to NieR, at least as a basic prospect. I know we've had crossovers before, and people have wanted a NieR one, but they were low-key "do it if you want to" seasonal events that probably don't count as canon. This is an entire raid story, a permanent part of FFXIV's lore, based on another game that isn't even part of the Final Fantasy series.)
