I suppose I look to this as something that has to be coded from the beginning. As others surmise, any references to he/she or similar are likely determined by configuration set in character creation. From the simple coding perspective, this could treat 0 as Female and 1 as Male when various tags check the attribute. The problem with adding a 2, or beyond, is that the code is presently absent the logic to interpret that, which could translate to simply a blank space or the game outright crashing depending on code structure. Further so, with the enormous amount of text the game has, voice acted aside, all the tags that refer to this variable will need to be checked and assured to be bug free. The argument that this might not be financially sound winds up carrying a bit more weight with this understanding, further so if we may consider further cultural differences.

But like some others, I subscribe to the notion that this isn't Earth as we know it. As such, expecting it to follow the same social norms or the people within vulnerable to various preferences or proclivities is self-insert at best and backseat authorial overreach at worst. Personally, I can recall people being upset about how the people of Spira dressed in FFX, not just X-2. Women revealing as much skin as they did, or the impracticality of certain garments, basically oozed the forcing of our reality on a fictional realm when people tried to assert things should or certain be a certain way.

And forgive me if this has come up as I haven't read the whole thread, but I also perceive this request as a slippery slope. If visually identifiable male characters dictate a female pronoun request, what's to further stop them from wanting the feminine variations of clothing to wear, as well? And vice versa? We're already looking at manpower issues when it comes to gearing up the new races and them basically borrowing other class assets, but to do this would literally double the required equipment data and all requisite testing to further guarantee things don't drastically clip, aren't seam broken, and so on.

Again, things like this are something that arguably needs to be considered from the beginning, not nearly a decade after the project's initiation. I can certainly understand inclusion, and to some extent, you can have that within the RP sphere amongst people who further respect the process, but right now, the mechanical requirements will likely not come to pass with super specific representation likely relegated to NPCs. And just going through Japan's track record with anime, sometimes that's not going to be flattering.