Speaking of Waluigi, does this moveset seem possible? I tried to make is similar to the Mario Bros. and Wario's movesets because I think that's how Sakurai would build his moveset, but still drew on his apperances in all the spin-offs.
Tennis Volley: Tosses a ball in the air and hits it with a purple trail. Can be charged on ground or in the air, and can be angled. Aerial version is angled down by default. Fully charged version can spike.
Waluigi Racer: Hops in
his Kart from Double Dash and rides around. Works more like Bowser Jr.'s Side-B than Wario's.
Waluigi Whirlwind: Waluigi spins upward with a rose in his mouth like in
his Special Shot from Aces, hitting multiple times. Draws from Wario's Up-B (Stole this idea from SSF2).
Dice Roll: A Mario Party Die appears above Waluigi's head with numbers 1-10, and rolls until the B-button is released. The number the die lands on affects Waluigi's move's knockback for the next 10 seconds. 1: Does 10% to Himself, gives a 1% knockback boost, 2-9: Gives a corresponding% boost, 10: Gives a 10% knockback boost and gives temporary invincibilty for 10 seconds. When the effect is active, a Mario Party-styled countdown from 10-1 appears above his stock icon. This move cannot be used again until the timer is over.