Medusa
Chance: 25%
Knowing Sakurai's bias for the Kid Icarus series and her status as the original main villain of the Kid Icarus franchise, Medusa seems like a decent choice for the next Kid Icarus rep. She can even make a fitting Echo of Palutena since the two have a similar body type and can utilize similar magic.
Her main hurdles are her competition. Viridi and Hades are also plausible picks to be the next KI newcomers, and they even have about the same if not more support amongst the Smash fanbase than Medusa has. Add to the limited newcomer roster space, and I'd say Medusa's chances are not high.
Want: 55%
If we're to get another Kid Icarus newcomer, she's my personal choice. I like her well enough, and she can make a plausible Palutena Echo. She could even make use of some dark magic, which I'm sure Smash could benefit from.
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We need some fitting music for this rating.
Perfect!
Tapu Koko
Chance: 35%
It's one of the forerunners for a Gen 7 newcomer. There are several factors going for Tapu Koko. It's a popular Pokemon that also been promoted a lot by Gamefreak. It has a major role in the anime because of its interactions with Ash (in fact, it's the Tapu that has the most interactions with him as far as I'm aware), and it even has a prominent role in the S/M games' story as one of the first Pokemon you meet before you get your starter, the Tapu that has its own cutscene of facing a UB when Lusamine opens the Ultra Wormholes across Alola, and it serves as a "final battle" of sorts with its legendary battle during the ending sequence (it's the Pokemon that begins and ends your journey in that sense). Out of all the Tapus, Tapu Koko has the best shot at joining the roster for these reasons.
From a design stand point, if we're to consider the possibility of Sakurai choosing it based on concept-art and what it can do to differentiate itself from other Pokemon, it does have that unique appeal. It can hide with its mask to create a shield of sorts, and while its typing is shared with Pikachu and Jigglypuff, it can stand out by using different Electric attacks from the former and actually use Fairy-type attacks compared to the latter. It could even use moves like Brave Bird and Nature's Blessing to give it a more unique flair (as well as using that Tapu Z-move for its Final Smash).
Like other Alola Pokemon, competition is its biggest issue. Decidueye, Incineroar, and Lycanroc are all just as prominent and popular as Tapu Koko is, though those three have the added advantage of being more supported by the Smash fanbase. If the recent Vergeben leak is anything to go by, Tapu Koko seems like a possibility since it isn't Decidueye or Lycanroc, but the same leak also supports Incineroar, who is arguably more likely for reasons already stated.
Want: 90%
It's one of my favorite Pokemon from Alola. I really like its design, backstory, and personality. It was even a memorable character in the Sun and Moon anime. I'd say it's on its way to becoming one of my top 10 favorite Pokemon overall, and its usefulness in competitive play was another contributing factor. It makes an awesome special sweeper, and it proved to be my MVP in my Battle Tree run.
I'd love to see Tapu Koko in Smash. I can imagine it standing out from Pikachu as a more destructive Electric attacker by utilizing stronger Electric-type attacks like Discharge and Electro Ball. It could perhaps even utilize Electric Terrain as its unique element on the Smash roster where it could electrify the ground on a Smash stage to power up its Electric-type attacks. It could also use moves like Brave Bird and Nature's Blessing to reference its destructive power as an Island Guardian. Its mannerisms when fighting could convey its character quite nicely: quite aggressive and angry when it attacks, yet curious and even cute in its idle animations, taunts, and victory animations.
I still prefer seeing Primarina being added as the main Gen 7 rep for Smash Ultimate, but if Tapu Koko is chosen instead, I'll gladly welcome its inclusion.
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Predictions
Monster Hunter stage:
41.14%
No comment.
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Nominations
Phoenix Wright (Ace Attorney):
x5
Only 4-6 newcomers in the base roster:
x5