As someone that won't exploit dup's and the like my list of 'exploits' I'll use are limited to things like that one. I was so sad when they fixed Maze of Madness. It's one of my least favorite quests to run and it became one of my favorites while that was going and I knew about it. Honestly I think those type of 'skip over parts of quests' holes aren't exploits at all - they're fun alternative ways to run quests - and I wish they'd leave some of those in the game. It makes a nice change from the 'open door, mobs spawn, kill mobs, move to next room' mechanic that they've been spewing forth for several updates now.