Maybe 2 or 3 days for stages? I don't want to spend too long with them.
As for undertuned moves, there are a lot more:
![Bayonetta :4bayonetta: :4bayonetta:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
F-tilt is so underwhelming compared to the rest of her moveset. Decent damage, but terribly laggy and doesn't combo or kill.
![Bowser Jr. :4bowserjr: :4bowserjr:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
D-tilt needs to have a reason to use over F-tilt. Less end lag, maybe?
![Corrin :4corrin: :4corrin:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
F-tilt is entirely outclassed. I feel like it should launch more horizontally to distinguish it from the more useful D- and U-tilts.
![King Dedede :4dedede: :4dedede:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Jet Hammer desperately needs no self damage and less lag.
![Dark Pit :4darkpit: :4darkpit:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
F-tilt needs less end lag to make up for it being weaker than Pit's, otherwise it has little to no use.
![Donkey Kong :4dk: :4dk:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Why does Giant Punch put him into freefall, again?
![Duck Hunt :4duckhunt: :4duckhunt:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Duck Jump is easily the worst flying recovery. Decent distance, but no hitboxes, uncancelable, and travels pitifully slow.
![Falco :4falco: :4falco:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Fire Bird is entirely outclassed by Fox's up-B. It should have more knockback than Fox's like in previous games, which would make up for it going shorter and having less mobility afterward.
![Ganondorf :4ganondorf: :4ganondorf:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
His Up-B should be more powerful than Falcon's to make up for it being slower and having less horizontal distance.
![Jigglypuff :4jigglypuff: :4jigglypuff:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Of all her moves, Rollout and Sing need huge buffs to be useful. Rollout should charge faster and not put you into a freefall-esque state after landing it in the air, and Sing should knock away aerial fighters, not trigger counters, and have less end lag.
![Little Mac :4littlemac: :4littlemac:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
U-air has literally no practical use. At least his other aerials have something they can somewhat do...
![Lucario :4lucario: :4lucario:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Extreme Speed needs less landing lag and less bounce back when hitting a wall (like Greninja's buff).
![Lucas :4lucas: :4lucas:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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![Ness :4ness: :4ness:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Why do their neutral B's put them into freefall, again?
![Marth :4marth: :4marth:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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![Lucina :4lucina: :4lucina:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
D-air needs to have less end lag or always spike. The risk/reward is currently too skewed to the left ATM.
![Mewtwo :4mewtwo: :4mewtwo:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
F-tilt should come out more quickly. It is currently outclassed by most of his other moves.
![Pac-Man :4pacman: :4pacman:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Grab. Need I say more? Also, fix D-air like MrGameguycolor suggested.
![Palutena :4palutena: :4palutena:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Increase knockback of F-tilt, have Autoreticle stay locked onto its target, and increase knockback of counter. Speaking of...
![Princess Peach :4peach: :4peach:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Increase knockback of counter, and make F-tilt either kill better or combo better.
![Samus :4samus: :4samus:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Make jabs connect reliably, and decrease end lag of F-tilt.
![Shulk :4shulk: :4shulk:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Increase duration of U- and D-air so they match the giant laser-sword that stays out for a while.
![Wario :4wario: :4wario:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Make F-smash more powerful or just generally better.
![Yoshi :4yoshi: :4yoshi:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Egg Roll should travel faster and have less end lag.
![Zelda :4zelda: :4zelda:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Din's Fire. Why does it take so long to come out and put her into free fall?