The ride never ends. As I said, unlike other requests Dixie is one of the last big Nintendo all-stars and part of a franchise that will never die or end like Donkey Kong and she'll most likely continue to appear in every mainline game onward like she did in Tropical Freeze.
Other requests don't get in because they're from franchises dead, or one-off characters, or are obscure.....Dixie doesn't have those problems.
You completely ignored what I wrote.
Dark Samus was a flat out DEAD character from a subseries that was finished in 2007, yet she got into Ultimate as a newcomer. In Smash Bros., the newcomer for Fire Emblem typically went to the character from the latest game in the series, yet they went with 2012/2013's Chrom over someone from Shadows of Valentia or from Three Houses (it could have been done, Roy was made into a clone for Melee despite his game not having been released yet).
We absolutely have no idea or indication what direction the next game is going to take after Ultimate. For all we know, Sakurai could very well opt for a hard reboot that shuts out characters like Dixie Kong, or make a game entirely of newcomers with loud fanbases (which again shuts out Dixie Kong). There are many scenarios that could keep Dixie Kong from ever becoming a newcomer in Smash Bros.
Just look at Toad. That is a character that is nearly guaranteed to have future appearances in the main franchises, and there are even other versions to the character that are important too (Captain Toad and Toadette), yet we got Daisy (who is nearly spinoff exclusive) and Pirahna Plant as our two Mario newcomers for this game (Geno has a good chance of still happening though). Toad will fall behind likely both Geno and Waluigi in terms of priority to become playable despite him being a far more important and iconic character in general.
Dixie Kong fans absolutely cannot ride into the belief that she is "inevitable". There could easily be no future for the DK series for a long time if Retro Studios has decided to retire from the series. The playable protagonists for the next game could easily just go back to DK and Diddy (only fighting a Kremling Krew led by K. Rool). Characters like Lanky Kong and Funky Kong could possibly surpass Dixie Kong in requests purely due to memes (just look at Waluigi).
Ashley and Shadow fans thought those characters were inevitable to be included in this game due to a whole bunch of things. People thought characters like Ridley, Dark Samus, and Chrom would never become playable due to the conventional wisdom of speculation.
These bold statements you make convince no one, and putting down other characters simply turns away others who might only be sympathetic to Dixie Kong.
We are better than that. A person who is superior at something does not feel the need to constantly brag about their superiority while simultaneously putting down others. Superiority should merely be evident. Talk about the acclaim and sales of the games Dixie Kong has had a starring role in. Talk about how much of a critical character Dixie Kong is for a series that surprisingly among Nintendo's biggest. Talk about about interesting she is as a character (Dixie Kong might very well have been the first game character to have prehensile hair). She has a lot going for her.
Yes, she does stick out very much as a conspicuous absence. She is among the very few critical characters to their franchise not to have any sort of notable role in Ultimate (the only other characters that come to mind are Bandanna Dee and Elma). That is why I feel Dixie Kong's DLC hopes and prospects are absolutely contingent on whether there also exists spirits for Bandanna Dee and Elma. If those characters lack spirits in the final game (especially when really obscure stuff is getting stickers), then it is pretty clear that those two are among the five DLC characters that are being planned, and Dixie Kong is out of the running for this game.
I will have more to say later (particularly on the post that BirthNote wrote as well as posts made by some others). However, your comments are turning away some fans and come across as haughty and condescending. I do not mean this as an insult to you. I deeply care about Dixie Kong getting in too, however, coming from someone who has been involved with character support for over 15 years, that is a counterproductive way of going about it.