Of course we have people who don't like that Thrall is jumping in to help out the Horde or rather Baine. In order for the Horde to repair itself we need people like Thrall to help mend it. For those saying its his fault then this is another reason for why he SHOULD be here.
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Though orcs like Drek'thar are fine because he tire more into the spiritual nature of the Horde, and was an original character involved in its change, and ever since Cata has openly been against Sylvannas. Saurfang wasnt needed as much as Hamuul or Drek
Drek'thar isn't really in the best of states he out of all characters deserves a good rest.