2. Bring in a world event dependent on certain very seldom actions being performed by the players. Like Uber Diablo event.
Again, my applause to you for bringing this up. Was there a bigger thrill in D2 than to be mindlessly farming and see that boner-inducing message on your screen? DIABLO WALKS THE EARTH!!!
Sadly, the spawning of Diablo in this fashion was accomplished by selling thousands of duped SoJ. I would suggest that D3 devs cough up a slightly more sensible (yet still uber fuckin rare) manner of creating the spawns.
New, random events, like the few there are now, released on a consistent developmental basis could really spice up farming. Aand, dev/blues could advertise in what zone these events could spawn to encourage farming diversity and maybe achiev props?? Could be seerious boner-inducing stuff