My ideal pass is pretty much the same as it ever was.
-Min Min
-Geno
-Dante
-Doomguy
-Elma
-Rayman
In terms of a realistic prediction, I have no idea. Taking my best guess (in no particular order)...
-Min Min
-Geno (much like with Banjo-Kazooie, I figure that high and consistent fan demand will play a large part in this)
-Rayman (Ubisoft made a full-on crossover with Mario)
-Ryu Hayabusa (an NES legacy character, and Koei-Tecmo helped make Fire Emblem: Three Houses)
-Sol Badguy (Kunio's inclusion as a spirit stands out, since Arc System Works doesn't have any other content in the game)
For the last one, I'm torn. On one hand, Namco-Bandai is
loooooooong overdue for another character. On the other hand, there are a ton of potential Capcom characters with a lot of demand behind them. (Phoenix Wright, Dante, Monster Hunter, Amaterasu...) On a weird third mutant hand, I figure there's going to be a blatant promotional pick for Nintendo in there, unless Min Min already counts. (the guessing game surrounding her got more people talking about ARMS than the game itself did) On a fourth hand (we're now getting into Goro from Mortal Kombat territory), they're already working with Microsoft, and it seems like a major missed opportunity to not include someone like Master Chief or Steve from Minecraft in there.
I'm going to err on the side of caution and assume that they don't want to overdo it with Capcom characters, and that Min Min is the closest that we'll get to a promotional pick. In that case, I'll go with Master Chief. Namco-Bandai seems hesitant to include their own characters in Smash for whatever reason (modesty? Not wanting to seem biased? Either way, we should have gotten a Tekken character by now), and Master Chief seems like a good pick to throw into the middle of the pass to get people excited. (I doubt he'd end off the pass; Smash rarely seems to end the announcements with the biggest character)
TL;DR:
Ideal pass:
Prediction pass:
Travis Touchdown barely missed out on both lists. I probably could have included Crash in the prediction list, but I'm not sure how close Nintendo and Activision are aside from making the Skylander/Amiibo hybrids years back.