You know what's happening here ! Here we go baby ! Hype train !
Let's start with the 3 most likely.
1- Springman: Since we got Inklings, I think Spring-man would be a nice fit too ! Arms is cool, and I think Springman could be a interesting character ! Like, maybe he could have the longest reaching jabs in the game, but if it misses, it takes a long time to return. Having to think strategically about every punch would make him very unique.
2- Rex+Pyra/Mythra: *Ahem* XENOBLADE 2 IS AMAZING !!!! And I think Rex would be very unique too ! You'd have to balance charging at your foe and staying close to Pyra to max your damage output. And another cool idea would be to have the ability to switch between Pyra and Mythra. Pyra could give a burn effect to your attacks, while Mythra could have quicker attacks. Also, each one could have a different final smash. Pyra's being a close range one (Burning Sword) and Mythra being a AOE type (Sacred Arrow). They would be a nice return for the 2 in 1 characters....speaking of which...
3- Ice Climbers: 3ds isn't a problem anymore....bring...them...BACK !!!
Now for a couple other 1st party ones.
4- Wolf: The only other returning character I'd like to see (kinda).
5- Young Link: But not as we know him. Something closer to him in Hylure Warriors. He could use different mask transformations as attacks. And you KNOW his final smash would be Fierce Deity ! I'd be so down for that!!!
6- Black Shadow: Yes, the villain from F-zero, let me explain. Who I actually want is Ganondorf, but like, ACTUAL Ganondorf, not Captain Fatcon. Give him classic Ganondorf attacks like dark magic, sword attacks and a controllable, UPRIGHT Beast Ganon final smash !!!! But...I also recognize that it would be a shame to lose the Ganondorf we have now. So that's where Black Shadow comes in ! Give him Ganon's moveset !!! It would fit him MUCH more to be a slow but strong Cpt Falcon clone ! You could even keep the same Final Smash ! Just change Beast Ganon for his car, the Black Bull !!!
7- Ridley: Sakurai: my man, NOBODY would complain if you shrunk Ridley !!!! NOBODY !!!! And with Metroid Prime 4 being on the works, we NEED another Metroid rep ! But...*Sigh* if it is that big of a problem, at least give us Dark Samus...
Now for the meaty stuff, the 3rd parties !!!!!
8- Bomberman: I mean, Super Bomberman R came out last year for the Switch, and Bomberman would be a interesting character. Laying bomb in strategic places, having them go off and create a chain reaction, kicking them around...GOD ! He would be a delightfully chaotic character to use ! And I mean...Konami ain't giving us back Snake, so at least we can hope for that...(Still mad because of Metal Gear Survive...)
9- Rayman: Unlike Konami tho, Ubisoft is awesome !!! And they totally deserve to be on Smash after giving us Mario+Rabbids ! However, I think Rayman would be a better fit than the Raving Rabbids. Not only is he a more classic and iconic character, but he also has a lot more interesting moves (Also Rayman Legends is on Switch) ! Btw, I also want him because of Artsy Omni's leak back in Smash 4....it was too good man...too good...
10- Crash: And the 3rd classic videogame mascot to bring in is...the mad Bandicoot Crash !!! I mean, the N'sane Trilogy has just been announced for Switch ! It would be AMAZING !!!! Also, for the 2 in 1 character team, bring in Uka Uka as well for a Rosalina and Luma situation ! (Coco alt skin would be cool too).
And now for a Wildcard character....
11- Doomguy: Hear me out... Some people may see Doomguy as the generic fps muscle dude, but he is not ! He's basically a extreme of a extreme ! A exaggerated badass guy ! And his design in the latest game could fit in the Smash Bros style ! Btw, about his latest game...it's kind of...on the Switch too. And Bethesda has been a BIG presence on the Switch, bringing Skyrim, Doom, and soon Wolfenstein 2. But out of all of those 3, I think Doomguy would be a better fit. Not only because we need more gun wielding characters in Smash (Dovahkiin uses a sword, and we have enough if that type) but also, Doomguy dates back to a a long time ago ! He's one of those classics that fits so well in Smash ! And that is why...I think he'd be a perfect wildcard character for Smash !!!
Inb4 the only newcomer is Bandana Dee, I'll not expect any of those in Smash so I don't end up disappointed like...some fans...
This was just a fun thing I wanted to do XD