Originally Posted by
Tsugunai
Illidan spent most of his life roped in villainy under the belief he was doing the right thing, and while his fate might seem nightmarish, it's actually what he'd want and Illidan seems to ultimately ends up as a true hero and savior of Azeroth. Even if in-universe characters don't like to outwardly admit it, he's totally redeemed himself and got the recognition he's always wanted.
Arthas was supposed to be a hero but also ended up a villain. Unlike Illidan, though, he had no redemption arc or anything like that (a memorable quest in Icecrown taunts and savagely crushes the very notion of this), dies the horrible villain he was since becoming the LK, and suffers a fate worse than death for all eternity and no one remembers him for anything but his evil.
It's just weird how Arthas and Illidan's journeys ended up, and I'm wondering if Arthas was such a worse person than Stormrage he deserved what he got.