Alright I finally tested this and here are my critiques:
- The current Dash attack feels... slow, maybe give him an electric tackle with a quicker animation.
- Generally all of his attacks need a speed boost, though not to high or he'll feel OP.
- The C-Up attack (USmash full charged) needs a sped up animation
- Tilts, where art thou?
- His movement speed could be a bit faster
- Pill effects over olimar only work on the melee slots.
Overall this is a good start, though on some moves it feels like you press a button and have to wait 1-2 seconds for something to happen. The ganondorf-falcon relationship with mario is there, but like Ganondorf in 3.5, Doc needs some faster movements and more "UMPH" in his attacks.
Personally though, Doc should be a sweet-spot character. Faster than mario but no quicker than luigi, Doc should heavily emphasize sweet-spots, being a doctor and all. To compensate for being fast than mario, Doc should have the players be punished for not getting the sweet-spot just right in the form of reduced damage and/or knock-back, but graciously reward the players with immense damage and knockback.