I really liked the intro—it had good effects, etc. I did feel the buildup to the drop could work a bit differently, like maybe a swelling pad on a minor-ish sounding note (i.e. 1 semitone away from the root). The drop came in nice, and I like the piano voice. I myself love to stuff my songs full, and there's room in drop and other parts to add more in the higher range, but that's just my taste. The only other thing I would say is that there's plenty of room for more effects and things... maybe a vocal would really work.
Very solid work.