Darth: In terms of the three things you brought up, the guys I mentioned probably do not deviate ultimately from those. I would have to give it some thought, but my initial reaction to that is to think that there are actually more forms than just man vs. man, man vs. nature/god, and man vs. himself. Each of those implies conflict, and I know there are things out there that don't involve conflict. Whether or not that's your cup of tea, that's up to you. There are some works (like the films of Andrei Tarkovsky) that subjugate or dissolve most conflict in indecipherable metaphors, so that it becomes a highly subjective experience for anyone watching. And there are some things out there that are more than just what they are about, but how they are about themselves. So it becomes like a metanarrative, commenting on itself. Even if it's all derived from a few root forms, it's still flexible enough as long as people are willing to experiment and others are willing to explore.
As for the three artists I mentioned, I wasn't saying that they contributed something totally fresh. Those three guys are the most common type of elite artists, who shift what we have profoundly because they understand the form of their craft and know how to bend it in a unique way. That is to say that they go deep down in the stratum of ideas and start changing things all the way up. This is unlike those that start from scratch and build their own foundations, of whom I can think of none at the moment.