Great post. I liked how you broke down everything neatly and added titles with colors for more diversity.
I'm hoping that Chorus Men, Chrom, and Shulk get announced at E3. This way we would be a lot more confident about getting more newcomers. Even if they aren't announced though, I'm skeptical that these are the only newcomers were getting. Secret characters have
always existed in Smash, and I don't think that Chorus Men, Chrom, and Shulk would be the only "secret" newcomers.
In Brawl we had four, them being
,
,
, and
.
I'm unsure how much Melee had, but I don't believe that Chorus Men, Chrom, and Shulk would be our only secret newcomers. Chrom or Shulk could easily be shown at the august direct and to a extent Chorus Men, making it seem even more unlikely.
Add the possibility of DLC, and the chances of us getting no other newcomers out of this list decreases even more.
Well, unless they add three more Mii Fighters.
Basically what I'm saying is that you shouldn't lose hope yet, there is still a chance that we could get more newcomers. So don't give up yet!