I also disagree that Dixie Kong should team up with another character in her moveset. To me, Dixie Kong is representative of the first playable character outside of DKC1, as well as the fact that she is a strong female protagonist and the lead of her own game in DKC3. I feel like making her pair up with another character would take away from her identify a bit, as it would make her seem lesser than Donkey Kong and Diddy Kong, even though that’s far from the truth. Dixie Kong is as equally playable as they are, and she definitely has the material to make a full moveset out of, regardless if she’s unique or a semi-clone.
Characters like Ice Climbers, Rosalina & Luma, Duck Hunt, and Banjo & Kazooie are paired up because it’s a part of their identities. Popo and Nana may not be played as a pair in Ice Climbers, but they do in Smash because it would be unfair to exclude either of the only playable characters in the game. Rosalina is the guardian of the Lumas, the dog and duck together make up the idenity of Duck Hunt, and Banjo & Kazooie’s whole character concept is that they always work together.
While having Dixie Kong team up with Kiddy Kong would make sense in a similar way, it would be like saying that Donkey Kong and Diddy Kong should also be a tag-team character. At this point, it would just feel wrong to me for Dixie Kong to team up with another character when Donkey Kong and Diddy Kong don’t. For similar reasons, I also feel like Dixie Kong wouldn’t work as an echo fighter. Dixie Kong has unique animations and characteristics from Donkey Kong and Diddy Kong, so I don’t see why she would get lesser treatment in Smash if she doesn’t in her home series.
Overall, if Dixie Kong is added into Smash, I feel like she should be added solely for her merits alone. She can bring a lot to the game on her own, and represent great games in DKC2, DKC3, and Tropical Freeze. I’m okay with her being a semi-clone, but I do feel like she has enough to work with as a unique fighter without teaming up with any other Kong. Other Kongs like Kiddy or Tiny would be interesting, but I feel like their only main series appearances in DKC3 and DK64 respectively kind of hurts them representing the Donkey Kong franchise as a whole, considering that Dixie Kong by herself is a major reoccurring character in comparison.