I'm surprised Garrosh as even a shred of honor left in him.
Sure, I'll give him brownie points for being disgusted by what his general did in the Stonetalon Peaks questline (killing civilians and children), as well as calling out Sylvanas as her Lich King-esque methods, but I think up to this point, Garrosh would not be so keen about formalities of honor or morality unless they affect him. What I mean is when Garrosh was once appauled by children being killed, he'd probably be advocating it now, or even enforcing it.
And if Garrosh is being "corrupted" by Pride, I'm surprised he's made NO mention about his Father being weak and such.
"What about your Father, Garrosh?"
"What about him?
"Grom Hellscream sacrificed everything he was to save not only the Horde, but all of Azeroth, too! Does he mean nothing to you?"
"Hah! My Father was a weakling, and a fool! He drank the blood of demons to give him power, and though it did work for awhile, he damned the Horde to becoming slaves to demons! I am no slave to the power I wield. The Sha do not control me... I control THEM! I will lead the Horde - MY Horde - to their destiny, and neither you, the Alliance, traitors of the Horde, the Sha, or anyone will stop me! The whole of Azeroth will be mine to rule, or be crushed underfoot!"