It's a very interesting remix, and I love me some dubstep.
It's always good to hear the wobble bass, but yours is missing a little something. It would do with some higher end, like maybe doubling it with a sawtooth to give it more impact. Also something bothers me about the main snare drum, I think it's that it lasts a smidge too long and it also feels a bit thin. Maybe take off reverb and see how that affects it.
I also think you could stand to use more stereo separation; everything just kind of sits in the middle for the most part.
Other than that, it's quite good. Work on those things and repost it, I would love to see where this goes!