These are just my opening impressions, nothing particularly final in nature.

1: Metal Blade doesn't really need to home in, and should by no means be +10 on block AS A PROJECTILE. In YOMI Hustle that basically gives you a free punish for someone blocking your attack, that's criminal. Same with missiles, but they can keep the homing.

2: Spot Dodge activating on f1 can contextually be a bit too much for some characters to deal with, as against certain attacks with a lot of endlag it ends up putting them as minus as character that were bursted.

3: Charge Shot, for the reward you get out of charging it fully, is by no means worth fully charging. Speed Burner ends up outclassing it in every situation.

4: The aerial mobility of the character feels more heavy than it needs to, and the gravity is extremely high, making landing aerials unsatisfying.

All in all, I think this is a solid foundation that needs a lot of work. I'm excited to see where Mii Gunner goes!