[jake13jake]

I think the idea of one-player quests would greatly improve questing. Especially in the sense of protection from lamers and the quality of NPC movement. Making copies of levels, or making every player into a clientside NPC would be ridiculous. As would making it so only one player can enter the level at a time (as with the SL intro). I think that if there was the ability to hide other players based on conditions, it could make quests a lot funner. I say conditions, because you might not want to hide a FAQ from a newb running through a quest and who can't figure things out for him/herself, and who doesn't know how to explain the problem that he/she has encountered.