So let me give you some feedback. xD
The new version was really cool but I think you could change some things...
Dash Attack - It's a cool attack but you already used it as a neutral A in air, using the same move isn't something cool (at least for me), so I'd suggest you to change the Dash for the one from Mario Galaxy 2 PSA, it's also the same dash Mario uses in Super Mario 64.
Hammer Attacks - They're all cool but I don't think you should add more moves with hammer...I mean already add a lot of moves with it, and you also wanted to change the Neutral B to a Hammer Throw, it already have some cool Hammer moves if you add more it'd be Hammer Mario and not SMBZ Mario because in SMBZ he uses more moves than hammer ones.
Neutral B - Keep the three hammers.
Taunts - He's needing a new Up Taunt because it's the same as the Down Taunt. That Taunt with the hammer sounded really cool, I know you said that it failed but SMBZ Mario needs some cool Taunts. You can find goog ones just by looking at Mario & Luigi Series Sprites, I'm sure you'll find something cool if you can't make them by yourself try asking some help. Also Mario gets the Cape when using one of the taunts, I'd suggest you to remove it because that why the Side-B is there, he already gets the Cape by using the Side-B why make him get it by the taunt too?
Final Smash - That combo is pretty awesome, like I already told you the final hit should be something epic, not Mario Tornado, I have a suggestion based on a SMBZ Episode: Do you remember when Mario got the Fire Flower at Yoshi's Island and used that cool combo on Koopa Bro Red? It'd be really amazing if you make it, it's just a suggestion...if there's no way to make it no problem. You could also put Mario Finale back, even if Mario is only allowed to use Fire attacks when he get a Fire Flower, this if the Final Smash, the most powerful attack from a Character in Brawl so there's no problem if he uses Fire attacks only in that case.
So yeah, that's what I think about it, some changes would be cool. Hope this helps you to make the moveset better than it already is.