The only semi-realistic character I want is Crash, and even then I only expect him next game. The first party characters I'd still like are Skull Kid, Black Knight and Porky, but they're all extremely unlikely, maybe Skull Kid has a chance in future games, but I don't think the other two will ever happen, I was really happy Black Knight even got to be an AT. After those there are a few characters that I think would be neat, like Bandana Dee, Ryu Hayabusa and Agumon, but they're not characters I dream of seeing, and it's likely I'd only play them sporadically in casual matches.
I honestly haven't thought much about what I personally want since Ridley got announced, ever since then I've been more hopeful on other fanbases' behalf than my own. I was really happy to see K. Rool and Banjo, even if I had no relation to them myself, I just like these big moments for speculation, and to see a lot of the good people around here be happy also makes me happy. If you gave me the opportunity to pick any one character to make it into Smash next, I'd probably go with Geno or Isaac, because even if I barely know them outside of what Smash speculation has taught me about them, I know their inclusions would mean a hell of a lot more to their fans than any personal wish would for me at this stage.