I made a moveset for the Miis now, I think I might main them soon enough if they use this moveset:
Here's the Mii playstyle:
Miis are unique, they can carry opponents and many things that surround them using the Wii Hand. Their moveset is based on the Wii Motion Controls that defined gaming and the equipment used in Wii Sports. Although most of their moves are fairly weak and are not able to KO an opponent, they have many unique things to use that make them fairly capable to live on the Battlefield.
Down-B: Sports Equipment Switch: The Mii switches with up to 5 sports gear to choose from to use for his Normal-B, you are able to quickly change gear, so there's no worrying about an opponent trying to get on you. There are many unique moves the Miis can choose:
Neutral-B:
Boxing Gloves: When changed into the boxing gloves, the Miis power in their punching moves is raised by x1.5. When you use the move however, gives a standard charge punch attack.
Bowling Ball: When changed into the Bowling Ball, the Miis are able roll the bowls for a projectile. Although slow, the balls have big KO potential if not dealt with.
Golf Club: When changed into the club, the Mii swings a golf club to shoot weak but abusable golf balls. You can shoot up to three at a time in the field, although the projectiles are a little slow when in the air.
Tennis Racket: When changed to the racket, the Mii is able to stun the opponent for a little while if the racket hits the opponent. Although the Mii will wear out if the move used too much.
Baseball Bat: When changed to the baseball bat, the Mii uses the baseball bat to swing out some fastballs that move in a straight line. The bat however does not hit opponents, only the baseballs. The balls have decent KO potential if aimed correctly.
Side-B: Reticle: The Mii summons a reticle that you can control circularly with the Control stick, once the B-Button is let go, the Mii will automatically throw the projectile where the target is at in a straight line. Note that it is not a homing projectile and it does not kill the opponent. If you use the reticle for moves such as the Mii's Golf Club and the Baseball Bat, it automatically home on the reticle.
Up-B: Drag: Miis summon the Wii Hand above them, the player can control the hand freely using the control stick, the maximum length you can reach the hand is about a platform distance. Once you grab the Mii with the hand, it will automatically cling the mii for you to drag. You can move them freely to any height you wish till after 2 seconds, using the hand to recover yourself slowly back to the stage. You can also grab the opponents to with your hand, and drag them at given speed. Just imagine dragging Mario, and trolling them like you have the force, it could potentially be a very fun move to use.
Edit: It seems someone invented the Drag move before me, welp, I thought I was a genius. ;-;