I just want her based around her own abilities honestly... Hair spins, hair grabs and Helicopter Spin, that's enough for me frankly. I wouldn't mind Dixie having a Bubblegum Popgun, Monkey Flip and the Banana as specials, and sharing a few normals and Aerials with Diddy. I love Diddy, and his moveset, I'd take a different variation of it with Dixie myself. She'd definitely be my second most played character then. But sure, the situation would be less than ideal. I just don't think giving her gimmicks just for the sake of it is a good idea.
I am in strong agreement. I would not mind if she shared a few of Diddy's moves (it may even be somewhat appropriate), though she would definitely be most satisfying with the majority of her moves being her own, as she now has plenty of resources to do this with, and she is one of those characters that is easy to brainstorm moves for.
So I have to ask, what counts as a gimmick? From my best understanding, all the following characters fall under gimmick:
Mario (Melee onwards)
Luigi
Ness:
Jigglypuff
Yoshi
DK
Kirby
Peach
Bowser
Ice Climbers
Dr. Mario
Pichu
Zelda
Sheik before SSB4
Marth
Roy
Olimar
Wario
Lucario
Pokemon Trainer
Dedede
Sonic
Snake
Metaknight (Brawl only)
Pit (Brawl only)
Zero Suit Samus
Ike
Diddy Kong
Lucas
ROB
Mega Man
Little Mac
Rosalina
Duck Hunt
Cloud
Ryu
Bayonetta
Robin
Wii Fit Trainer
Corrin
Pac-Man
Bowser Jr.
Villager
Lucina
Greninja
Inkling
Isabelle
K. Rool
Incineroar
Ken
Simon
Richter
Banjo-Kazooie
Chrom
Steve
Sephiroth
Pyra/Mythra
Hero
Min Min
Piranha Plant
Terry
Joker
EDIT: Ridley
So that's about 63 characters in a 90+ roster. If I really stretch it, Pikachu and the Links can certainly apply, making it 67 characters and counting, plus whoever shows up in the Fighter's Pass. That's a decent chunk more than half.
Gimmicks have been part of Smash since '64; in that game, Yoshi, Kirby, DK, Jigglypuff, Luigi, Ness and arguably Pikachu, Fox and Samus had a gimmick that gave them an edge and that's 9/12 characters, aka 75%. It only got "worse" in Melee once more gimmick characters showed up and characters like Mario got a brand new move that changed his whole impact, which is the cape and the FLUDD.
In the DK category, Donkey Kong has his Down B, Side B and Cargo Grab as his gimmicks. Diddy has the bananas and Side B. K. Rool has his Belly Armor and Down B. These are all "gimmicky" characters, so Dixie getting a gimmick of her own would be perfectly fine for her series and not a big deal for Smash as a whole. What her gimmick could be can vary: she can get extra grabs thanks to her hair and a unique cargo grab; she can potentially summon animal buddies to help her; she can use items from DKC; she can tag in and out with Kiddy or Funky; she can have an in-depth use of bubblegum; she can be a 5-limbed fighter. The possibilities are certainly there.
I see a gimmick as a feature or action which is intended to be appealing on its own in a given context, and to make something more desirable. I would not count Pikachu's small size, for example, as a gimmick since Pikachu is naturally that small, and the size is not intended for Smash Bros. (the given context) to be appealing on its own, or to make Pikachu more desirable. Pikachu already was that size in the Pokémon.
As for Dixie, I do not believe she needs a gimmick because others have them, however, it does seem like the best course of ction to give her one since there are appropriate examples displayed in Donkey Kong. My selection would be as follows:
1. A cargo hold/throw (whether as a standard grab follow-up, or as a separate command.)
2. An infinite special in her hair spin.
3. At least one move that may be executed out of an otherwise helpless fall.
My personal wish for Dixie is to feature the animal buddies for three of her specials and her hair twirl as her last one. I’d love Rambi as a neutral special that functioned kind of like Jigglypuff’s roll where he charges in place then dashed forward. Up B would be either Squawks or Rattly. Down B is harder to place but something with Squitter could be cool. Her forward B would be the hair twirl and function similarly to DK’s forward special.
The other option I would love is a tag mechanic with Kiddy Kong. Partners are a big part of DKC and I feel it could definitely be represented in Smash. They could each have a special that picks up the other Kong and throws them while the down special would be a tag. This would allow Dixie to have both her hair twirl and bubblegum gun as her other specials.
Animal friends would be a nice touch, but the issue I have with seeing them for Dixie (and most Kongs, for that matter) is that most of them are not associated with her specifically. For example, I could not speak 'matter-of-factly', but I always imagined that people associated Rambi with Donkey Kong before any other Kong. The other animal friends, while having no special affinity or association with other Kongs, also do not strike me as being close to Dixie Kong. As a result, I do not easily see how Dixie could use animal friends 'naturally,' unless the choice is the elephant, as Ellie debuted in Dixie's 'limelight' game, has many interesting ablities, and is the closest thing to a parallel with Rambi (he was essentially replaced by Ellie in that game).
As for tagging with Kiddy, I do like the idea, as it both leaves room for an inspired moveset and interesting abilities, and allows Kiddy to make an appearance (I gather that he is not especially popular, but he had the same status as Diddy and Dixie when they first appeared) without 'wasting' a spot on the roster. It would also make Dixie less likely to become too similar to Diddy, and potentially offer more power.