I'm totally with you there. Honestly, I really wish that Dixie was either a newcomer in Smash 4, or a tag team with Diddy like originally intended. I may be more aligned towards K. Rool, but I really do think Dixie deserves a spot on the roster. She was the star of DKC3 after all! (And was playable more often than Donkey Kong himself in the original DKC trilogy funnily enough) If she were added into Smash 4, well sure it would have been disappointing to many K. Rool fans, but it would have given her the slot that she deserves, and make K. Rool nearly a shoo-in for this game. Plus, I'll bet that there would have been a few more K. Rool supporters, since Dixie fans would be satisfied by her inclusion, and thus be more enthusiastic in requesting the main villain to go with the three main Kongs.
As it stands though, Dixie and K. Rool seem to be in direct competition, and it really feels like it's going to be one or other, which is a shame, because both have merit. If this game were more like Smash 4, I'd be more optimistic about the chances of both getting in, but considering the size and scope of this game combined with Sakurai's statement that there won't be too many Newcomers, it does seem a bit unlikely. Like I said, I do think K. Rool has a good chance, and he may even have the edge over Dixie considering the ballot and Mii Kostume. Still though, as ecstatic as I would be if K. Rool makes it, I do think that the DK representation just wouldn't be quite complete without Dixie... But at the same time, if Dixie makes it but not K. Rool, I'll feel super bummed out about K. Rool not making the cut despite everything going for him. Aaaah, the conundrum.
What I'm hoping for is for both to get in, but for Dixie to be a semi-clone of Diddy on the level of Lucas and Falco, sharing a couple of moves and animations, but having enough unique material to properly represent her character. Hopefully that would make it possible for both to make it (Though of course the best case scenario is that both make it and and both are totally unique). Though like I said, it does seem unlikely... I'm sorry, I really don't mean to start any Dixie vs K. Rool arguments here, but it's just something that I've been thinking about and wanted to share my thoughts on.