Has greymane or even fuckmothering sylvanas come forward and asked if he had doubts or regrets now, at the end that would have been fine. Sure its a little conflict but this coming from the professional victim and deluded runner-up illidon't.
Now a savage blizzard would have had valen turn and ask if illidan's 80% demon followers had been of any tremendous use so far. If demon hunters are now, or where indeed -ever- necessary. After all anybody who sold out to the legion stood as much chance at knowing what he knows, and a surprise raid on a demon world is not exactly cutting edge tatics. Illidan's tormented, driven minions are as valuable to this war as a farmer who traded his pitchfork for a sword to protect his home