IMO, falty, joy orbison etc all sound really really different. which is great.
which is also one of the things that ties dubstep together, across its disparate ends.
post-dubstep is slightly less weak than "joystep" (which was awesome for the bit of time it existed, based on the flame thread alone), but really... why the "post-"?
if you really want to make future-leaning music, I honestly think it's a matter of practicing a bunch, fucking up a bunch, writing alot of crap, and then finally gleaming the edge of what it is that you want to do. Get thru all the derivative junk and find what it is that makes your sound YOURS. joy orbison nailed the microvox, pads, and sidechaining on hyph mngo-- no reason to follow that. Falty's new "mean streets" bit is tremendous, afrobeat-laden goodness (check the last subswara podcast for it). etc, etc, etc.
the only advice i can give is find your sound, and work to differentiate it from anything else.
which is exactly the advice i'd give to someone working on non-post-dubstep

. the world needs another mediocre, kick/snare/lfo riddim like i need to spend the day sitting on staples.
unless, of cousre, someone puts it all together in a fresh way and makes it awesome. which brings us back to the top....