I've been thinking about MMO's recently, and how quests are usually set up in them.

Normally, with so many players on a server, you end up seeing many other players doing exactly the same quest as you, and it kind of takes you out of the experience.

I've been thinking about how this can be improved upon, but I don't know how you could keep that many players on one server and keep everybody doing something different.

Perhaps quests could be randomized like loot, where multiple parts come together, both in terms of the enemies you're killing, the location you're going to, etc... however, this probably wouldn't be very good for important story quests... as they might not make much sense.

Anybody have any other possible ideas, not just about this, but on any aspects of MMOs that you'd like to change?