Based on what you just shared, this should very effectively eliminate anime/manga characters and characters that simply don't have game history to some extent.
So basically, Goku isn't going to happen. To be frank, suggesting he might get in because of Cloud is like saying G.I. Joe is eligible because of Solid Snake.
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Now here's my thing. With the upcoming direct, some people are saying that veterans aren't going to happen...except they don't provide a valid reason to believe that. Additionally, there are two character slots left. Why would the Smash Ballot arbitrarily produce 2 newcomers? Why wouldn't it work like your everyday ballot that provides the winner, or the selection with the most votes? There's never been an indication that that was the case.
Depending on how many characters we're meant to get, we could see a number of scenarios. I know that there's apparently evidence that there is a "Fighter Pack #1" which would lend itself to a "Fighter Pack #2", but at the same time, who knows what the packs will include?
For all we know, Mewtwo (for some ungodly reason) might be considered a special case because of how he was sold on his own. Then again he may not be. The packs will, based on the information we have (considering that the presentation will talk about Cloud, and then likely the two other character slots in the data), be between 3-4 characters. Either one or the other imo. If it turns out to be 4 and 4, that would mean one character doesn't have a slot ready in the data, similar to how Mewtwo didn't have one in any data prior to his reveal.
As I've previously said, I think what we'll see is some info on
and the Midgar Stage. Some info on the Chocobo costumes, and whatever else will be added in terms of Mii Fighters will be included. Then, you'll get two characters based on the data slots. Past that, if the 4 and 4 theory stays true we'll get a final character. To me, that character would be the Ballot Winner as the "fan choice" character.
I can't help but shake the vibe that
and
would be included. I don't know. I don't really know why they would add 2 Newcomers from the ballot as that seems like a fairly arbitrary number.
and
both make sense to bring back, as they're both popular characters and Snake easily fits the bill as a gaming history character. Not to mention they're in pretty good shape to sell well considering they're veterans.
I guess my prediction, again, is that Pack #1 will be
and Pack #2 will be
and...the Ballot Winner.
Looks like good DLC to me!