Originally Posted by
Chumpp
Holy shit, sweet idea just clicked:
-FIRST boss is the Lich King, not the last. When you step into the instance he teleports you up to his area, you fight him or his phantom, then after killing him (or him getting bored with you) he starts destroying parts of the instance and sending waves of undead after you, including bosses. You have to run out instead of in. It'll be like ZA/COS in the sense that there'll be a timer, and if you make it out on time you get extra loot or a token of some sort. If you wipe you lose the chance at the bonus and just go back in and finish off the rest of the mobs/bosses without a timer.
Damn...I just got myself all excited over an instance I cooked up. I should be a Blizzard dev.