Dark Pit - 2%
Well I haven't played Uprising (sniff), but from what I know, he is both an antagonist for a while, and later becomes an ally of Pit, his closest ally in combat.
However, I'm heavily doubt that Sakurai would choose a potential semi-clone of Pit over the more important and popular Palutena, who, to my understanding, also has more potential. If anything, I can see him getting in as a palette swap. Pit already had a dark palette swap in Brawl too, so perhaps it might get a bit updated for that.
Want - 0%
Palutena or bust.
Also, Dark Samus is pretty much the only "dark" version of a character that could actually be interesting as her own character. (unless you count Wario, since he is meant to be a bad counterpart as well as rival of Mario.)
Toad - 0.1%
Rosalina's inclusion dealt a rather large blow to all other possible Mario newcomers, particularly Toad. When it comes to Mario newcomers, at this point I honestly can only see Bowser Jr. getting in as a semi-clone of Bowser, or Dr. Mario returning, once again as a clone.
Plus, Sakurai decided to show a commemorative pic of the day featuring the protagonists of Super Mario 3D World upon it's Japanese release, showing Toad as Peach's meatshield again. I really doubt Sakurai would feel a need to do this if another Toad was playable. And again, Rosalina's really hurt his chances as well. The sole reason I'm even giving him 0.1% of a chance is because the ST Toon Link on the Spirit Train is replaced by Alfonzo if the WW Toon Link is being used on that stage. Even then, that's kind of grasping at straws. I think a specific character's move would be harder to change compared to a backround character on a stage, just when another specific character to be playable. I don't know, it just seems like it'd be more difficult and not worth it. Alfonzo acting as ST Link's replacement is literally the only thing Toad has going for him anymore, and it still doesn't boost his chances much.
Want - 65%
I was never a huge fan of Toad, and although Bowser Jr. was always my preferred choice for a Mario newcomer and I'm happy with Rosalina & Luma, but hey, I always liked him, and I think he could work well in Smash, so I'd happily accept and welcome him if he were to make it in Smash. And I feel bad for his fans too, he has a rather strong fanbase.
Jimmy T. Prediction - 2.17%
Nominations - Playable Master Hand x5
This is kind of a concept/character nomination. I'm nominating the idea of Master Hand being playable as his own character, or rather, a slightly smaller, less powerful version, capable of suffering from knockback and damage normally, and being selectable on the roster. Just like any other average character.
(unless we've done this already. I'm near-certain we haven't, unless it was long ago before I even started participating in RTCR.)