If Sakurai would only look at the Smash ballot results for Japan for the next game, I'd be so happy. There isn't a single choice here that pains me:
The thing with this list is that Bayonetta is listed so low on this list, which means that US and Europe probably had her near the top, and Sakurai barely took the Japanese into account for once. So even though characters people have been wanting such as K. Rool Wolf, Bandanna Waddle Dee, Geno, Ashley, Dixie Kong, and Isaac, were all more popular in Japan, they must have been massively outclasses by characters like Bayonetta in the US and Europe, but moreover I believe they were outclasses by meme characters like Goku and Steve from minecraft.
Now this could go either two ways:
1) The one realizable character from EU and NA has been exhausted, meaning next in line for a slot would be K. Rool, Wolf, and Waddle Dee. Inkling was on this list and is in the game, so it's definitely a possiblity.
2) Instead of looking to Japan for reference, Sakurai continues catering to the Western territories, going through and adding characters from games like Minecraft.
Either way, the way I see it, it is very unlikely at this point that K. Rool is not in the next Smash. He outright won the ballot and got a Mii costume. I actually believe the only reason we didn't see him is because Bayonetta won in Europe and was probably second in the US to Goku.