I feel that riveting horde pride knowing the one who sat out the war while horde soldiers die is now an asset to the enemy faction! (even if he does not realise it!)
Until sylvanas goes full garrosh and starts placing races below the pecking order then we can kick her teeth in. Plus Saurfang was the brains behind the war of thorns, he planned everything! Even the assassins! Such honour!
In the stories Sylvanas even says to herself she only burnt the damn tree because for some reason Saurfang couldn't kill Malfurion because of muh honour.