Really loved the limited synths. You should work some more on the drums, though.
Add some some sweet mid-bass on the kick, and tone down a bit on the high-mid frequencies.
I'm not really sure what freq-range the snare is in, but that can be easily located with a parametric EQ. I'm assuming its low-middish, so just boost it up a bit and add just a bit of high to it to get the crispness out of the drum. Just a bit of reverb should probably make the snare sound a little more ambient, too.
Maybe compress both the kick and the snare a bit to make them a little more dubsteppy.
Of course, these tips are all based on my personal taste, but I guess some of them could be somewhat useful.
Keep it up! You've got yourself a follower!