yeah so, every race (even the Forsaken, who havent appeared this expac) are now against Garrosh and his orcs. In 5.3, we see that he controls the loyalty of only the Kor'Kron and hired mercenaries, we don't see a single Garrosh enforcer who isnt an orc or goblin.
This might fly for a filler patch, but what about the siege? What allies can Garrosh count on to serve him over their racial leaders? Why would any trolls, forsaken, tauren, or blood elves serve this insane monster over their racial leaders?
The mogu perhaps, now that Lei Shen is dead?