Hmm, workable, but not really great...
Well, you wanted constructive criticism, so I'll try my hand at it:
The intro sounded strange b/c I think you were using open hats. Maybe stick with closed hats when doing a 16th note roll for an intro?
The underlying bass had a typical chord progression, and it was fine... until 0:26 came along. The lead is in a different key. The first notes were right, but that second harmonic is not in key; it's also out of beat at one section (I think).
So, in the end.... try working up some better harmonies/chords. The layering is fine since it's at a decent pace, but the lead is what kinda messes it up. If you're going for a quick 1-minute theme, then I'd suggest that be the only thing I'd realy suggest remastering.
thanks for the info