Eh, I don't know...

A group of players insisted that we wouldn't be going to Sharlayan anytime soon because it was sealed off to the outside world and had a strict policy of isolation even harsher than Ishgard's former stance. We're set to visit the place in Endwalker.

A similar group of players claimed that we'd never get Viera men added to the name because of how restrictive their lore happened to be and the fact that they were described as never being seen by outsiders. They're also set to appear in Endwalker - as a playable option.

I recall pushing many times over the years for a 'darker' job along the lines of a Demon Hunter or Warlock from World of Warcraft. It was proposed by some that it'd never happen because the player character would supposedly never, ever make pacts with Voidsent. Yet again, as of Endwalker we're getting the Reaper job with such a premise.

I think there's a pretty good chance that the development team will just add whatever proves popular, ultimately. Even if it involves tweaking the lore to accommodate such additions.