-"I'm Popeye the sailor mannn..."
-Super Sentai
-Metal Heroes
-Doshin the Giant

My Top 10:

1. Shantae
2. Earthworm Jim
3. Rayman
4. Travis Touchdown
5. Chibi Robo
6. Lara Croft
7. Waluigi
8. Doomguy
9. Scorpion (Costume color change here could actually become alternate fighters like Sub Zero, Reptile or Ermac)
10. Captain N: The Game Master

I forgot I'd also like Kamek as a new Yoshi series representative, because that's the franchise where he usually plays a bigger role.

Maybe have Conker as a new third party representative, and have his reveal trailer include Conker noticing "familiar faces from better days.".

Very odd, unpopular, not really talked about for obvious reasons, pick for me also, is Mr. Peterson.... I want him in Smash...

I know it's not popular to advocate for more swordfighters, but I'd like to see some Falcom representation. Adol, Rean, or Estelle (maybe as a staff fighter she could be something different for the series) would be good choices.

And I just thought of another new representation I'd like to see in Smash.

Kazuma, Ichiban, or Majima, especially now that Yakuza/Like a Dragon is now showing up big on Switch 2.

From Nintendo: Dixie Kong, Koopa Troopa and Pauline

From other companies: Crash Bandicoot, Agumon, Bomberman and Scorpion