mmyep
you sound like you know what you're doing, so i'll just offer my opinion.
the piano in the beginning (the left-hand part) sounds too cloudy for my taste, if you haven't already, split the left-hand and right-hand piano into 2 tracks and EQ each so the bass doesn't sound so blotchy..? everything else sounded pretty nice. the drums were kinda flat (try changing the pitch of the snare/hi-hat/bass every now and again) the lead that comes in around 3:00 is really loud for its frequency (just my opnion, but, well, look at your score)
but overally, sounded really nice, even though the chord progression got a little boring to me (you can only lead-solo a certain amount, imo)