http://dehacked.2y.net/microstorage.php/info/454/MMX2.smv
Yay, managed to improve the intro stage by 7 frames, 1 in the stage, 3 on the boss and 3 more due to avoiding lag in the end. I had to do what FractalFusion did in his video with the ending shot, so it might look a little strange when I'm using the exact same strategy for the shot, but when it saves 3 frames, I think it's worth copying someone else.
Now, to decide whether to do it with no enhancements/upgrades, or all enhancements upgrade.
I wont battle Agile, Serges or Violen for Zero parts in any of the alternatives, since Agile will appear in Bubble crabs stage for both alternatives, and if you know what you have to do to spawn a mini-boss in Bubble Crabs stage, you will agree with me.
Edit: I got to the latter part of Wire Sponge stage before I ran into a major problem, which leaves me to either restart or waste alot of frames. :/