Wise fwom your gwave, thwead!
Anyway, i really like this a lot. My favorite option for the level 2 is definately the human slingshot.
The only thing i'm not sure about is his level 3. A metal gear has the same attacks as sweet tooth's mecha-tooth and now (not that we knew this when this thread was made) emmett graves' level 3 is a mech with a machine gun. So i thought of an alternate level 3 for big boss:
EVA rides up on her motorcycle and says "hop on!" Snake jumps on the back of the motorcycle, wielding the scorpion light machine gun like he did in the games. This super requires only the control sticks. The left stick moves the motorcycle around and pushing the control stick up causes it to launch in the air. The right stick is the scorpion. Holding the control stick in a direction causes snake to shoot in that direction, meaning snake has a full 360 range of fire. After the end of the super, snake jumps off of the motorcycle and EVA drives away shouting, "see ya!"
It would be really cool if his animation for his level 1 included a hold up with the Bannana before strapping on the Fulton device.
For Down Circle I think it would be better if he just set down a Box Bomb.