I'm just wondering if there's gonna be a higher focus on requested characters like King K. Rool. Cuz otherwise I don't see him happening after his ten year absence. And he wasn't even the winner of the ballot.
Do we know the ballot results now? I havent paid attention to this stuff since we got the final DLC characters but it's pretty obvious Bayo was the most "realizable" of the top choices and not the true winner. In fact I'd guess that one of the reasons we didn't get inklings was cause sakurai decided to save that for this time around as they would be a more time consuming character to make; all of the final DLC characters were human shaped with movesets that weren't too different from what we've seen from other character (from a game programmer point of view i mean, they wouldn't require making some ink based moveset that might be very different from anything we've seen).
So my assumption is the ballot will be the main focus of who is chosen this time, and many of the characters that didn't make the cut were held back purposefully to do them justice in this game rather than give us a half-hearted attempt at a moveset and playstyle rushed for smash 4 DLC. Think about how Ganondorf is still how he is, Sakurai doesn't like tweaking a character too much once they are established to play a certain way (and im not talking competitive level stuff I mean the basic way they play). If say we gotten Inkling as DLC I imagine they might have been given a basic moveset like some standard shooting character and many people would be disappointed with them playing "boring" instead of something interesting with inking up the arena and swimming through it, that would have to be saved for this game and if they were already in smash4 it would just be a drastic change from their old play style and Sakurai wouldn't want that.
Essentially I feel that many characters who were high on ballot were not "realizable" because of the time and care sakurai would want to give them to make them unique, and so I expect many of those high ballot characters to show up this time with the proper amount of focus to doing them justice as a smash character.