well the tilts are good but it hard to hit with them, you have to be really up close with him in order to hit them. the Air back A attack also has this problem,
I had actually prefered the netural B special that you had before. Since it gives that machine gun feeling in SMBZ.
some of animations were still Diddy's. You could just copy some of Sonic's animations to fix that.
the netural B in air doesnt really seem to make sense to me. i know how to use it, but its really hard to pull off. :/ maybe something else would be better for that.
the down b on the ground and air doesnt really work as it should, MarioDK's ShadowKong has a counter that should work out for Mecha.
i kinda liked the up B special on the ground but i think it should be the same as the one in the air.
He needs some win animations, you should use Sonic's and Shadow win animations for that, and also for him losing. you can just copy Sonic's lose animation. But make sure you remember to remove the GFXs because you'll probably just get the guns or the jetpack to show up.
he's still too slow, just try to make him faster, you can just copy sonic's atributes so he can move as fast as Sonic.
the down smash doesnt have enough knockback. its a good move, but it doesnt send the oponent anywhere, in other words, no kill potential.
some of the animations, his arm bends really weird. like it doesnt look natural.
i think thats about it, oh and very awesome improvement from the beta.
just a side note, i saw the Mecha Shadow texture, lol you should make a Mecha Silver one. XD