I'm going in a different direction. The photographs that I consider "masterpieces" are not that because of how accurately they reflect reality. (Thus, why I'm not in the camp of the future has to be 3-d, super-realistic) In fact, I would argue that some of the greatest photographs are of dubious technical accuracy - slightly out of focus, grainy, even -- shudder -- in black and white!
Therefore, I think that the "sci-fi" dreams of future photograpy for me would be a way to evoke an emotion by somehow implanting an image directly into a person's (or group of persons') consciousness. Sort of an image that does not depend on visual perception, but goes straight to the brain. Photography for the blind?
Anyway, it's science fiction, right, so who knows?!?