I just tried out the most recent version. Some thoughts:
Jab: Perfect.
DTilt: Finished.
FTilt: Cool idea, but needs polish. The graphic is misplaced, and quite frankly doesn't look good. While the game's default graphics do work well most of the time, both this slash graphic and down B's graphic effect really seem out of place and very much below the standard of the rest of the move set. It's a lot more work, but I recommend making a custom graphic for both yourself and putting it in. The moves will look much more professional that way. While I don't do PSA, I do believe you can make custom effects, which I think are called external graphic effects. I'm sure there are tutorials on Kitty Corp that could help you if you aren't familiar with them. FTilt's would be a much smaller and cleaned up slash effect like the animation in the games, while Down B's would be a large blue orb around himself just like in the movie.
UTilt: Love the new animation, but it is really hard to hit with. Either give the hitboxes a visual indicator, or move them to fully cover him and the area above him.
USmash, DSmash: Done.
FSmash: This looks pretty awesome, and is really satisfying to land. Just one weird bug. If the opponent is really close to you, they will get harmlessly pushed back by M2's fist without ever getting hit. Give him some hitboxes closer to himself as well.
Aerials: Done.
Dash Attack: Done.
Up B: Give him the old startup back. It's far too fast now. If you want to speed it up, cut end lag instead.
Side B: It sounds like you're working on it, so I won't comment.
B: Done.
Down B: You've already fixed the utility of the move, so my only concern is the aforementioned aesthetics. The animation is great, but the graphics really make it look amateurish. I think a glowing blue orb should be moderately simple to make, and it'll look fantastic.