Forward/Backward Air Dash - A standard forward or backward air dash.
-Project their Reflectors in midair and use them as platforms to kick off from.
- Magical glyph thing. Your standard anime fighter air dash.
-
He's just built different. Probably some sort of fiery falcon motif as you'd expect.
- Sora gets an air dash in some KH games (Air Slide), so just use that here.
8-Way Air Dash -
- Characters with wings, or some other means of levitation or propulsion would get an 8-way air dash, allowing them to advance or retreat in any direction, or even serve as a short pseudo jump.
To try and make this a bit more balanced, upwards directions travel a shorter distance than going downward or to the sides. Characters who already have multiple jumps, consume 1 jump for air dashing, but get slightly more distance to compensate (except for upward dashes. If you want the height, it's still better to just jump again.)
- Wario is surprisingly one of these characters. He achieves this using his jetpack from
Get It Together! When using his Classic costume though, this is changed to Jet Wario from the original
Wario Land.
Tether -
- Most tethers throw out said tether to try and grab the stage ledge, though this is also where we also start to see a little more variance.
- Luigi's plunger will actually stick to walls, allowing him to briefly wall cling.
- Ditches Peach's float for the Grappling Vine from
Super Mario Bros. Wonder.
- The return of Chain. Just as a tether though.
- The return of Pikmin Chain (with hopefully an increased number of Pikmin allowed on screen.) The length and, by extension, effectiveness of this tether will be dependent and the amount of Pikmin in your current party.
A bit unrelated, but I'd personally also remove the whole weight mechanic to Up Special or simply add additional Winged Pikmin that carry the other Pikmin and trail behind Olimar. Olimar would then have the ability to still grab one to swing at opponents, to try and protect his Pikmin on their way back to stage. Never liked how Olimar is incentivized to just off his current party in order to recover.
Float
- Peach's float gets move to holding Z-Air instead of being activated by holding jump.
- Ganondorf and Jr.'s Clown Cart can also float, even moving up or down, but they're both a bit slower than Peach making their floats rather sluggish in exchange for the higher freedom of movement.
Other
- Gets his dive from the 3D Mario games, allowing to descend quickly while covering decent distances on or off stage.
- The return of Koopa Klaw. It's an air grab exclusively now. It lacks the power and cheese potential of Flying Slam, but the claw swipe gives it greater range and makes it safer even if you whiff the grab.
- Summons a platform beneath him from, I actually forget which classic Mega Man exactly, but it's there. Outright serves as a temporary platform wherever it's placed, meaning it can also be used by opponents.
- Blows a big bubble that he then lays on top of, riding it as it drifts. Can be steered left or right but will pop when attacked.