Blind rage, bloody vengeance and glorious death. I take those any day over pitiful weakness, pathetic surrender to the fate and acceptance of “your place”.
Nathanos was literally “who?” Until recently when Danuser picked him up and essentially replaced with his self insert.
One beheaded crook in exchange for a largest and most humiliating military defeat not only of night elves but of the whole Alliance is not gonna cut it.
Thrall came close to the right idea - Sylvanas head on a stick is a good way to set things on the right path, even though that is still quite a cheap price to pay.