I've got some ideas for how to represent these games in the next entry.
Tears of the Kingdom:
-Zelda's new Final Smash involves her dragon form, and we finally get BOTW Zelda as the main incarnation of Zelda for this round.
-Sidon Assist Trophy
-Spirits of Rehydrated Ganondorf, Yona, and a couple of the custom inventions.
Metroid Dread:
-Raven Beak has to appear in some form, whether as a spirit, assist, stage hazard, or even as a fighter.
-Give Samus some new moves based on the new attacks.
Kirby and the Forgotten Land:
-If this doesn't convince the dev team that Bandanna Dee should get in Smash, he never really had a shot.
-Forgo Dedede as a costume, skin, or alt. Tell me that wouldn't be hype.
-Above all else, a new stage based on the game.
Pokemon Sword, Shield, Scarlet, and Violet:
-Sword/Shield Wild Area stage, take it or leave it.
-As for a new fighter, I propose another Trainer: Nemona with Quaxly, Tinkatuff, and Meowscarada. I will take any questions you have for this particular trio.
Fire Emblem Engage:
-Make Alear the new Shulk, where he/she can summon one of five Emblem Rings to assist at any point.
-If that's too difficult to program, or if Shulk's already planned to be in the next roster, then just make Emblem Rings an item like the Pokeball or Assist Trophy. That way, the likes of Marth, Roy, Ike, Chrom, and the others, could still appear in Smash.
Xenoblade Chronicles 3:
-Make the new protagonist a newcomer. It worked for the Aegis, it can work for this game's star.
Sonic Frontiers:
-A new stage based on the Open Zone. Like we all weren't asking for that in our subconscious.
-GIVE US ANOTHER SONIC CHARACTER, YOU COWARDS. Eggman, Tails, Knuckles, Amy, Shadow, Metal Sonic, Classic Sonic, Sage, anyone!
Mega Man 11:
-Maybe some additional Assist Trophies from the Classic Mega Man games? If the Emblem Rings are a summoning item, then we probably have some space to fill for the miscellaneous summons.
Street Fighter 6:
-Luke would be a good newcomer from outside the mainstream Street Fighter 2 roster.
-Perhaps turn Metro City into a new stage? I know it first appeared in Final Fight, but Final Fight is to Street Fighter nowadays what Donkey Kong Country is to Super Mario.
Final Fantasy VII Remake:
-Ordinarily, I'd request a Final Fantasy rep that doesn't come from VII. But if I had to choose, Tifa would be the third representitive in my book.
King of Fighters XV:
-Shoot, IDK. Just get Kyo Kusanagi and/or Iori Yagami first before we talk about the new hotness.
Tekken 8:
-Maybe a second Tekken rep could shine through. I hear Jin Kazama might be the next face of the series looking forward.
Kingdom Hearts MOM & IV:
-While most of us would center around Riku, Roxas, or Axel as a second Kingdom Hearts character, I think Kairi is slowly becoming on par with them in terms of likelihood.
And since you missed a few games...
Metroid Prime 4:
-Sylux in place of Raven Beak as our next Metroid rep. Maybe even Mother Brain.
Detective Pikachu Returns:
-A Pikachu alt that gives him a voice. Outside of a Ryme City stage, that's the best way to utilize the game.
Pikmin 4:
-Considering the custom molds they centered around for a few seconds, I think the pink-haired female newcomer might be a default for our next Pikmin rep. Being able to go on night missions helps justify the inclusion, I think.
Advance Wars 1+2: Re-Boot Camp:
-Andy and Sami's chances may finally have increased.
WarioWare: Move It!:
-Ashley as a playable character. If not her, then maybe 9-Volt.
Super Mario Bros. Wonder:
-Use the Wonder Seed as an Item. We don't need Elephant Sonic. (I await the inevitable fan art of that very thing. Do not send it to me.)
Limited Run Games Direct:
-A very generic title, but hear me out. Shantae, Gex, and Tomba as playable fighters.
Mario Party Superstars:
-For those who liked Smash Tour, or for those who like chaotic stages, make a Mario Party stage.
FNAF: Security Breach:
-This is the excuse the FNAF fandom needs to get Freddy Fazbear in Smash. I am sorry if you feel bad about that.
Pokemon Legends: Arceus:
-If you want to be subversive, give Arceus an invitation.