They'll probably find a way to make it so Illidan doesn't actually die in the story line. (Blizz for ya.) Cause honestly, it SHOWED Varimathras kill his brother Balnazzar(Sp?) in Warcraft III, and anyone who's done live side of Stratholme can see he's clearly not dead(until you kill him.) And there is no real explanation for that.I mean think of it, Illidan finds a way to escape Arthas(After he fuses with the Lich King)..barely might I add and Arthas+Lich King= The highest of the scourge, Illidan was hired by Kil'Jaedan(One of the three Eredar offered power by Sargeras, a god who created the burning legion, let a human mage "kill him" possessed her, and then eventually moved on to possessing her son Medivh.)(Also, just more pointlessness, Velen the dude who's like the draenei leader in Exodar was one of the three offered power, but he turned down, the other was Archimonde and he accepted, but got wtf pwnt in the face by Illidan at Hyjal.) Anyway going on.  Illidan failed in his attempt to kill Arthas and Kil'Jaedan was pissed, but somehow he still managed to live. These are like god like creatures in WoW. Kil'Jaedan works for the person responsible for the burning legion even existing, and Illidan works for Kil'Jaedan. So would it REALLY make sense for Blizzard to have Illidan die to some common no-named adventurers? I mean.. Arthas doesn't manage to kill him before he escapes.. but some random dudes fuck up his crib and kill him? Doesn't seem too likely to me.