Yarp, for realz. Can't hold a good source down.
Experimental is right - definitely not like much that I've heard before. Obtuse said the things about muddiness that I wanted to say, so may as well not repeat that here.
The swelling on the bass saw is distracting, when it's used as consistently as it is. A swell for the first note of a phrase then no swell (by adjusting the attack value) would be ideal - get your effect without distracting the listener.
Aside from that, though, there's the arrangement. If you're shooting for OCR, there is a delicate balance to be made between conservative and liberal, which this track takes it a bit too far on the liberal side. That bass texture may be from the source, but if that's all that holds it to Ice Cap until the end I don't think that would be accepted on here.
I like the samples, but that's because I'm a sucker for them. Most people would probably say rely on them less. Personally, I say use them, but be sure to have some rhyme and reason to them. I think I heard what you were going for ('You're too Slow' - Tempo Change, Robotnik - Dubstep), and I commend you for it; that's clever. Using those sounds at other points where nothing happens, though (as well as using sounds that don't lead to anything) makes the effects less pronounced.
The dubstep losses it's flavor when the LFO raises to a point where the wubs move too fast for too long. If you got wubs, play with them a bit more.
It's great to experiment - often that's where you can learn the most about music. I hope you can learn a lot from this track.