So among the new info from the latest Famitsu magazine was a list of every character officially revealed so far. And believe it or not...it's a problem.
Notice how they're in the same order as the leaked CSS? If they're using that order elsewhere...it really hurts the odds of them being willing to rearrange the CSS, meaning that
any unknown newcomers would have to fit within it.
That actually doesn't hurt our chances much...but there's something else to consider that I brought up a while back.
Let's assume Star Fox or Pokemon had one character yet to be revealed. R.O.B. would move down a spot, with just barely enough room to fit (since we can clearly see the second-lowest row has room for only one more character as-is). It'd be an unusual move, since it'd separate retro characters R.O.B. and DHD, but not out of the question considering how Mr. Game & Watch is way off in the middle of nowhere on the top right.
Let's say they did want to keep them together, though, or that we had two newcomers from Star Fox and Pokemon combined...or perhaps a character from one or the other and then Bandana Dee, forcing Little Mac to slide down a row. Regardless of the reason, R.O.B. and DHD would both move down a row...and overcrowd the second-lowest row. Someone would have to move down...which raises another question: would they be willing to separate the clones into two rows?
If not, they'd all go to the bottom row...which would present
other problems. The bottom row has room for four more squares, so they'd fit...but
it'd leave the bottom row with one more square than the row above it, an aesthetically awkward move they might not be willing to do.
There's also something else to take into account...where would the Mii Fighters' square go when customizations were on? The menu screenshot we saw was presumably for customizing--one option to create a Mii Fighter, the other to pick alternate specials and equipment for characters. Wouldn't there need to be a way to select the Mii Fighters from the CSS, at the very least for if you wanted to play against a computer-controlled one? Because if so...they'd make more sense to be right next to random, which would fill the bottom row and leave
a gap on each side of the second-lowest row that'd look just as bad. They
could add the Mii Fighters' square to the second-lowest row, next to the Wii Fit Trainer, but it wouldn't make quite as much sense to put the game's create-a-character anywhere but last.
So unless Nintendo throws another curveball at us and turns out to be willing to rearrange the CSS after all, or will at least rearrange more characters that are their franchise's sole reps than just G-Dub, or somehow adds another column...it'd be very hard for there to be more newcomers. The good news is, Krystal would plausibly work...but she'd be up against the likes of Wolf, Sceptile, and
freaking Mewtwo.