Drums are really nice sounding. Needs more top end, can't hear the hats at all. Maybe thats the saturation your using which is masking them, not sure.
The main synth is proper filth, I would like to hear it without all the panning though. It's nice to hear something different, but it's quite distracting, even more so on headphones I'd imagine!
It's a fair point about the variation bit, it needs a break from the filth at some point. This is quite Black sun empire, but they use a lot of simple melodies to break it up, not that you wanna do exactly what they do of course.
Stick some heavy duty phaser on the synth at a few bits, like the 2nd drop.
Nice work.