I've mentioned it before several times, but the most I would be willing to give them a pass for is anything pre-shadowbringers not working because from Shadowbringers on, they knew these races existed and the work that would need to go into them

Putting it off, to me, seems like it would only increase the backlog of hats they would need to get working
Though I've seen people mention it's the hairstyles themselves and not the hats, but I don't know enough to speak on it with any authority - either way, it's something SE needs to fix
I don't even personally wear hats, so it doesn't affect me all that much, but it would still be nice to have for those that really want the feature

From what I've read online, it seems we were meant to get unique hairstyles to compensate for the lack of hats, but we've received neither

The bare minimum that should work are:
- Shadowbringers and beyond
- Mogstation items
- MSQ related cosmetics, like the imperial helmets you wear to disguise yourself on two different occasions

The mogstation one is especially egregious, because you pay actual money for those items