Which Ascians are left? (Spoilers up to 5.4 obviously)

[RyuDragnier]

Yes the are worth worrying about.

The Ascians associated with Gaia were the ones defeated by Ardbert. But there was a cutscene in ARR that shows the whole group, so minus the ones we've defeated and the ones defeated by Ardbert and Fandaniel, the rest are MIA. All of which can have different motives and potential avenues to complicate the story.

I wouldn't be surprised if at least one of them (Altima maybe?) just didn't bother with the whole thing and decided to live out a comfortable life elsewhere. With their powers, they could easily make by as court magicians, seers, shamans, etc. They'd be set for life if they found the right people willing to accept them.

[Kesey]

I wouldn't be surprised if at least one of them (Altima maybe?) just didn't bother with the whole thing and decided to live out a comfortable life elsewhere. With their powers, they could easily make by as court magicians, seers, shamans, etc. They'd be set for life if they found the right people willing to accept them.

Well, I'm not sure I'd guess that level of detail, but I'd assume the Ascians will continue to be a wild cards of the story, even when a new threat presents itself in the post 6.0 story.