I don't really want a specific character as a villain so much as an antagonistic force that's fundamentally, politically against us and our beliefs. I think that's what they were going for with Alexandria, but they chickened out by making every citizen either innocent or ignorant of the atrocities their nation was committing. Their army was comprised entirely of robots too.. just so we wouldn't have to actually fight and kill any of them. It's such a weird attempt to try and wash the WoL's hands of any potential wrongdoing.
It's much more of a scary, human threat when you imagine an entire nation is against us, and not just one or two bad apples with a doomsday plot. Garlemald fit that bill for quite a while, but the writers seemed to want to rush them out the door as quickly as they could in Shadowbringers and Endwalker.
I'm so tired of having every conflict end so quickly and without any lasting complications.. or having the Eorzean Alliance treat their enemies so insanely altruistically. I refuse to believe none of the leaders wouldn't want to impose some sort of FFXIV equivalent to the Treaty of Versailles on Garlemald after everything they put them, and the rest of the world, through. I'm actually glad there's no Garlean Restoration. It's such a laugh that they had the reason for it not being there that the Garleans were too proud to accept our help. As if our characters would even WANT to in the first place.
It's just funny that for as much as the game's story talks about the importance of humanity, emotions, etc, they almost never let our character, or any of the 'good guys' feel the slightest amount of bitterness about their enemies. Maybe I'm asking for too much, or something too specific. It just rubs me the wrong way, and it's a problem I don't think any singular villain, no matter how well written, is going to solve.