I like the intro, but I felt it was a bit long and also, the drums took too long to start up. Maybe some FX to build up the drop? The middle voice you have playing against the bass starting in the first section (which begins at :45) is neat; it doesn't seem like it's getting in the way of the bass, so maybe it could be louder? I like the fake drop at 1:25, really keeps the energy moving. The voice that came in at 2:18 is refreshing; I agree it could be in a longer section. I do feel it also could have been a bit more melodically complex. The outro didn't feel satisfying to me, not sure why but maybe you could progress into it differently? Like add reverse risers, or even just repeat the 2:18-starting section again but dropping out or EQ-cutting voices to make an obvious build down.
I liked the slower pace, and felt it fit in well with the chill vibe of the song. Wub it a bit and you could pass it off as high-energy dubstep. [j/k]