I have the strange feeling that you guys don't actually know how clones work.
I actually I know it for a fact. Because you are objectively wrong about the process by which clones happen/don't happen.
- Clones are a result of characters who can be built from a similar model, animations, and ABILITIES with the base character. The fact that said character has their own uniqueness separate from the base character, is not a determining factor that they would not be a clone. Clones have their own unique traits, and yet they are still clones. Dark Pit has his staff and electroshock arm, Lucas uses different PSI abilities, Wolf has claws, a unique posture, and several of his own unique moves and ways of performing them.
- Characters that share similar models, animations, abilities are reserved as lower priority characters that are added late in development because they can be made easily by borrowing those assets, and because those traits make them less unique than other characters. The fact that Dixie shares a similar model, animations, and abilities with Diddy is what determines that she would in fact be a clone added late in development, because she can be made quicker that way.
- Dixie Kong objectively has a similar model to Diddy, which means she can easily borrow moves, animations, and abilities from Diddy. The Gumball Gun and Monkey Flip are examples of this.
So when you say "Why can't Dixie be unique?", it's just as ridicolous as saying "Why can't Lucas be unique?
Why can't Wolf be unique? Why can't Toon Link be unique?"
Just because these characters COULD be unique, doesn't mean that they ARE or that they WILL BE. There's a reason Lucas doesn't have unique PSI abilities, or why Toon Link doesn't have his own items or weapons, or why Robin was chosen over Chrom.
And the nuance of this needs to be established. The big determining factors are, firstly, the
model structure. This is the first requirement, because once you have this, you can then move on to
animations. So when a character has a similar model, which then gives them similar animations, they can then perform similar
abilities.
So for example
- Rosalina may look similar to Peach, but her different model (such as her dress) prevents her from performing the same animations as Peach, which, in combination with her canonical lack of said abilities, prevents her from performing similar abilities.
- Someone like Dixie, has a very similar model, which allows her to perform some of the same animations as Diddy, which in turn allows her to perform similar abilities, like the Gumball Gun and Monkey Flip. However, as mentioned, she DOES have unique abilities such as her hair and guitar, but this only means some of her non special attacks and her final smash would be different. No that her entire move set would be. That would be like saying that Wolf has claws so he would be an entirely different character.