Would be a classic: AQ did that already neither did DF 2 yrs ago. Since I hunk it might be the final battle. BUT. I will suggest AE to put a Good/Evil PVP reputation. You win reputation by killing players from the other side.
There's still the master of Drakath, which I'm guessing will be more creative and difficult. There's also the fight between Evil and Good. Maybe King Alteon's corruption will take over him and he'll screw up lore. When we finish with Drakath, he'll probably do another act to screw us up. There's tons of other possible story lines, it's just the pattern they're going to put it in.