At times like these, I love not being epileptic.
If you like overwhelming power and speed, incessant lightshows and incredible moves that the original characters don't have, this is the thing to watch.
Some things that I'm sure you've spotted, but didn't do anything about it:
1) The mouth animations weren't pixel art.
2) Use of bitmaps when it wasn't really needed. (when Shadow and Sonic finished their battle and talked for a while, for instance)
The cast consisted of original sprites, some edited sprites and a few recolors.
You'd get a 10 in violence, but there wasn't any blood. Also, I understand that it took you over a year to complete, I could see that a mile away. (if you're like me, you probably got lazy and slacked off many times)
Great, I liked it. If I were to work on another sprite movie, which is totally possible, I'd gladly collaborate with you, or any other gifted animator. (my last submission was not too long ago, yesterday)
-NA