Garlean Third Eye Customization option

[Absimiliard]

I mean, he doesn't have a third eye, it's not like he's trying very hard to hide it even if he did have one considering those pathetic bangs. Maybe there's some obscure piece of lore that says some pureblooded Garleans don't have the third eye or maybe he pulled it out with a knife? But at that point you're making far bigger assumptions than just "he's a Garlean but most people don't know about it which is why it's not a big deal".
The lack of the third eye is kind of imperative to the argument here. He was hidden because he doesn't have one, an hypothetical Garlean WoL would need to have one otherwise what's even the point of adding Garleans as a race? But then do you really think it'd make sense for people like Gaius to look at your character and dismiss it and even go as far as to call you a common Eorzean adventurer when it should be obvious to him that's clearly not the case?
And I did bring up the Au Ra in this thread, which I do think the way they were handled was a mistake if the intent was always to have them become a playable race. While it's true that it's a thing that happened and it's now forever a part of the game I don't believe that kind of short-sighted thinking from early in the game's lifespan should be used to justify repeating the same mistake again.
A glamour piece would be good enough I feel.

There is indeed a piece of lore noting Kan-E-Senna's guard to be a pureblood. I do, however, concede that his pureblood status creates several conflicts with other things from around that time, not the least of which being his ability to remain largely unmolested by the Gridanians even when viewed without a helmet or mask. Definitely some jank there.

The above aside, and more to the point; Garleans as of current lore are largely indistinguishable from other Hyurans unless their third eye is exposed. Gaius and most others would have no way of knowing the difference unless someone decided to just parade around with their extra organ on display for the world.

I'm not denying there would be a few issues. I am merely observing that, in light of how poorly most playable races have been handled, the addition of a handful of Garlean customization options wouldn't exactly come as any kind of major shock. Nor would it necessitate the addition of any text, given the player character (glamour notwithstanding) would have access to a helmet or other head covering at nearly any given time anyway. About the only thing it would really accomplish is making a not insignificant portion of the player-base quite happy. SE could even toss them on the Mogstation if they wanted to make some serious cash with very little investment.

The glamour route is a thought, but it would require more than one type. We've seen a few different styles of Garlean third eye. We've also observed that some Garleans have a body structure more akin to that of Elezen, necessitating the addition of rounded ears if the objective is to cover one's bases properly.

[Ameela]

There is indeed a piece of lore noting Kan-E-Senna's guard to be a pureblood.

Is there? It's kinda hard to look for since he doesn't even have a name, but the short story where it seems like this piece of lore originated from makes no mention of the sort.

[kaynide]

Is there? It's kinda hard to look for since he doesn't even have a name, but the short story where it seems like this piece of lore originated from makes no mention of the sort.

Directed less at you specifically than the whole "is he isn't he debate"; as your link points out:

The boy Kan-E-Senna cured is referred to as a Hyur from Garlemald and not of the Garlean race. It's important to differentiate that there are Garleans (the race) and Garleans (the nationality).

Story from official site (Ameela's link)

Excerpt (bold for emphasis):

Clad in armor of the same unholy steel as the magitek monster which had entombed him, the Hyuran youth met Kan-E-Senna’s gaze. Not yet a man grown, there he lay, bloodied and battered on this godsforsaken battlefield.

...

Kan-E turned about with a start. Before her stood a young Hyuran in leather armor of the purest white—one of the Keepers of the Entwined Serpent, the Elder Seedseer’s personal honor guard, established in the wake of the Calamity.