What is Thrall or Baine going to do in the Maw? Can we honestly ask?
Baine literally is just a warrior, and Thrall’s shamanistic powers are useless in a whole different plain of existence.
If you want something to blame, why are the prominent Horde figures chumps? Alliance has a super mage and the best paladin ever in the Maw…and the Horde brings two guys.