Most of my current dislike for Y'shtola is that her presence is the death of all narrative tension. She's so popular that *nothing* bad can happen to her. Nothing that isn't either glossed over (I barely remember she's blind. She always manages to see perfectly fine even when the ambient aether is explicitly thin) or instantly recovered (oh she used Flow again? Rescued in ten minutes by Emet. Died to make a path to the end of the universe? Bam, back to life).

I might have believed for a moment that Thancred or Estinien would be in trouble in Ultima Thule, but the nanosecond Y'shtola volunteered I knew heaven, hell, and the universe itself would bend around resurrecting her because she has plot armor more solid than Jean Grey and her personal velvet-roped revolving door to the afterlife.