Err... that depends. By futurists, are you talking about people who try to guess at the future, or are you talking about the classical avant-garde artistic movement in pre-WW2 Italy that glorified speed, violence, sexism, and fascism?
For the former, I've got nothing. The MMO concept is still evolving, and hasn't reached its potential yet. As others have said, it would take a significant new development in technology (equivalent to the development of the internet), or a cultural change of some sigificance.
I suppose the latter would advocate something that might not be discussable on these boards, but it would be quite violent, and all D&D books would be burned for being old fashioned and out of date.