the prodigy - would be really great, i think they would push it intn a higer lvl
bonobo - for some relaxing dub with his genius melodies, exciting
dj kentaro - mixing all music styles into dubstep

have a look at this youtube-channel, glad that i found that dudes tunes:
http://uk.youtube.com/user/DubstepTunez

massive night with the bug, grimelock, milanese and dmz!
hope they have such a good line up next year, or even better.
will there be a downloadable set of the dmz show??? it was huuuuge