Welp, looks like I forgot to post on Decidueye's day. Might as well give some briefs thoughts on the character despite his day already being over.
I think he is among one of the most likely Pokemon to represent Generation 7. It has lots of popularity and supporters behind his back, as well as its inclusion in Pokken, and he can definitely bring something unique with the archer moveset. Being a Grass-type isn't necessarily the only justification why it should be in: completing a trio doesn't seem to be a priority for fighting developers (look at how Swampert is the only one of the Hoenn Starter trio not in Pokken yet). As for the Pokemon's issues, it's mainly competition: some other popular Alola Pokemon it would have to compete against include Mimikyu and Incineroar, the latter even has the advantage of showing up in the anime thus far.
As for how much I want Decidueye, I'd be quite welcome seeing it in the game. It's got an awesome design, and I also like its moveset potential. Pure archers are something I really like to see in the next Smash installment, so you can imagine why it's one of the reasons I'm rooting for characters like Revali and Takumi. However, I do have several other Pokemon I am more interested in, namely Primarina and Gallade (the latter I'm aware has very little chance).
Anyway, onto our Monado Boy.
Shulk
Chance: 95%
I highly doubt Shulk will be cut. His series has now become an established Nintendo franchise with the release of XCX and XC2, and Shulk is the main protagonist of the first game. He is basically what Marth is to Fire Emblem. Shulk even has a lot of popularity on his back. Only reason I can see Shulk being cut is if he is considered low priority, but again, I doubt it.
Want: 100%
One of my favorite video game protagonists and my secondary in the early Smash 4 days. He's an awesome character with a pretty fun moveset, so I'd love to see him come back.
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Predictions
Skull Kid (The Legend of Zelda): 12.43%
He suffers from most of the issues that other Zelda newcomer candidates have.
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Nominations
Greninja (Pokemon): x5