My take on the remaining 4/5 (hopefully a bunch of leaks don't happen while I take like an hour to type this)
I still think that Gematsu was outdated. And the Chorus Men were only originally planned, but got scrapped due to 3ds complications just like Ice Climbers. There's no other reason Ice Climbers would be cut, right? They were pretty overpowered in Brawl, but Meta Knight returned. That'd be a bad reason anyways, them physically not being able to return is the only reason I will accept from Sakurai for their abscence. And I don't see the Chorus Men working if Ice Climbers didnt. Every way to work around it sounds unlikely, and if ICs have an enemy in Smash Run but aren't playable, then we shouldn't have much hope for a different RH character except as DLC.
I know it's easy to just say Gematsu was fake, but I do think it was real. And the reason why we have Robin and not Chrom was basically summed up in Sakurai's article. I think he was planned though, it seems like they consider him the main character of awakening, they sure did tease him a lot in the trailer, like he's not just any other random deconfirmation.
So basically, I think Chrom and Chorus Men are on the same boat for pretty much the opposite reasons.
Also, another thing about Chorus Men, isn't RH dominantly a handheld series? Why wouldn't it get a 3ds stage? Or did it?
And, if Chorus Men are out of the picture, how many are left?
5? 4 + Miis? Seriously, how will Miis work on the select screen? And what will occupy their slot on an online roster?
I'm not going to mess around with Mii theories.
I think our remaining characters are Mewtwo (unique veteran), Ridley (unique newcomer), Dixie Kong (could be clone or unique newcomer), Impa (could be clone or unique newcomer- much more likely to be a clone), and... Somebody. I don't know.
If its a veteran and one of the remaining ones aren't cut- Wolf. He has the least going against him of the remaining veterans. I don't know why Lucas would be gone but he'd be back, but Gematsu did say that was being considered. So I'm not surprised. Ice climbers have the E3 2013 comment about 3ds difficulty against them. Snake, ivysaur, and Squirtle have been assumed gone for a long time. So, unless it was actually leaked that Wolf is cut, I'd say it could be him.
Once again, I don't know about Miis. Maybe they get a spot idk.
But if its a newcomer, I'd say its one if the last 3 unique choices I haven't stopped considering- being King K Rool, Isaac, and Mach Rider. The rest seem pretty much done for imo.
I don't know which one is the most likely... Of those 3 options, not the newcomer picks, K Rool has got to be the frontrunner of that trio. But I could see it being just Wolf or Miis.