K. Rool has potential for a more unique moveset in general, I'm not just talking about not being a clone. The amount of moveset potential begs for an incredibly easy to make character with lots of unique moves. You'd be reaching out more to give Dixie stuff. True, K. Rool could use Wario's moveset, but so could Dixie for that matter, whether or not it'd be awkward. The only thing Dixie couldn't use is the AAA, easily replacable, probably just uer her hair instead for it. Dixie using a jetpack, popgun, and dropping banana peels makes a lot more sense then Bowser breathing fire and doing things that are physically impossible for him what with Bowser's moves that involve his shell.
*tries to invision a Dixie Kong that farts around, and bites people*
...Maybe K.Rool, but not Dixie there. I also think you made a typo there with Bowser's name instead of K.Rool, but as I've said, K.Rool has spat fire balls out of his mouth before so... Shell stuff actually wouldn't that be that difficult to redo either, but I digress, because I think K.Rool would fit Wario's moveset better actually. (It really fits him outside of the motor cycle, but hey, you say Dixie can have a jetpack) >_>
Also, I've never seen a K.Rool moveset that doesn't borrow from other things. The Blunderbuss is like the only major thing people really bring up, but most of the time they envision it as some type of super scope type deal. I'm not saying that Dixie Kong has some type of completely unique moveset either, but neither does K.Rool. Playing the moveset card only works with really unique characters like the Ice Climbers, or PT. This point really doesn't make a difference. They could be clones, or they might not be, it doesn't change either of their chances really.
K. Rool plays MAJOR ROLES in more games then anyone else, including the major ones. K. Rool had major roles in all the old games and still regularly shows up in the new ones, the main exception being Jungle Beat, which had nobody whatsoever from the DK universe but DK himself, so that's hardly a good argument.
Also he was never in the original DK games~ His "MAJOR ROLES" though are pretty much generic garbage. He's just a geneirc end boss #14456. His role is major in the technical sense due to him providing the motivation, but he really plays a tiny role outside of that. He's just there at the end so that you can beat him up. The player has no connection to him, because he's just the same as every other boss they have to face (only he's last). Even other villains like Kamek, or Black Shadow have a larger role than he does really, because the former actually shows up every boss fight, and the later is actually playable in a sense. K.Rool is just another tired knock off of Bowser that every platformer has, and while those end bosses all have a "MAJOR ROLE" in their game, they are still worthless.
Isaac was the only assist trophy with any chance in hell of getting it. All the assist trophies were decided on early to not be playable and were never seriously considered. Proof? Um. . .Hello. Andross is an assist trophy over Krystal. How much sense does that make in representing characters people thought were likely for Brawl? K. Rool was probably considered for a playable slot, though not very seriously.
Actually, Tingle, Walugi, Samurai Goroh, Little Mac and others had chances of getting in. Isaac's chances are always a little overated it seems. >_>
And Andross falls into the first category I said. He was the type of character who could not be added due to simply what he is. No one suggests Andross because everyone knows Andross is a giant floating head who shoots those pannels at you. Still, his role is greater than Wolf's or even Falco's in his game. Is K.Rool had a actually had the importance of Andross, instead of the "MAJOR ROLE" he has in the DK series, then he'd get in before even Diddy.
And on the Diddy/Dixie tag team thing, have you seen how useful Diddy's down B is in competetive play? It's one of the core moves of his game. It's hardly slapped on. Even going with your argument that Dixie just simply couldn't use Diddy's up B and neutral B, Dixie could just get two new special moves a glide, a replaced AA, and she'd be fine. That sure took a lot of effort! If Dixie was considered to be a character by herself, she wouldn't be paried up with Diddy in the first place. On Sakurai's poll, there were three options, Diddy, K. Rool, Diddy & Dixie. Dixie alone wasn't even present at all.
Its slapped on, dude. It turned out great for him sure, but just look how unnatural it looks. Given that we know that he was originally intended to be paired with Dixie, it kinda screams out that what switches them was replaced by that akward looking move. Also, there weren't options on the poll, just random people making suggestions. Even so, the poll is pretty much the worst thing to base your arguments over, because not only was it never fully translated, but it also doesn't really give a clear people of what the people really wanted, since at the most, only five people voted for a single character.
And about K. Rool's reasons sucking so terribly. . .Dixie's reasons suck much worse then K. Rool's, which is why they're there as a side by side comparison. Dixie has become as generic as Waluigi and Daisy nowadays, while K. Rool is still a main character.
Haha...oh wow. Really man, don't let this debate blind you to what K.Rool is. He's just the generic main villain going after his generic main villain goals. Dixie isn't all that much better, being a some type of 90s girl-power monkey, but she's not really in the same class as Waluigi and Daisy, who are just filler. Lest I remind you though, that despite all of K.Rool's "importance" to his franchise, he's still the one who got picked last for these dumb cross over games. He's still not the one that's been playable in every apperance (bar Smash) that he's made. He's still not the one that actually was considered in some form, instead of no form. Dixie Kong is all of these though, and has more games than K.Rool to boot.