Karate Joe - 10%
There's no doubt in my mind that we're going to get a Rhythm Heaven character, but I still hold the belief that it will be the Chorus Kids, or Marshal.
Want - 70%
A karate-styled fighter with a rhythm based gimmick would be pretty darn epic.
Galacta Knight - 1%
Heh, I remember after beating Superstar Ultra in 2009 I thought "Galacta Knight would totally be a shoo-in for a new Super Smash Bros. game!" Oh, how oblivious I was back then.
Anyway, yeah, he could be an easy clone....that's really it. What other credentials does he have besides that and having been a boss in two games?
Furthermore, it's not like we're going to get many more (if any), clone newcomers, especially ones as "cloney" as Lucina appears to be.
I also really don't see why Sakurai would think Meta Knight of all characters should have a clone, considering how Meta Knight himself is in definite need of nerfs and tweaking. Meta Knight was always a guaranteed veteran regardless, but at the same time he still needs a lot of revamping. A clone of him just seems flat-out unnecessary.
Lastly, a fourth Kirby character was never really likely in the first place for a number of reasons. I still think Bandana Dee is first in line for that, owing mainly to having a more established character and, as far as I know, more popularity as a contender for the next Smash Bros.
Want - 60%
That being said, if Galacta Knight somehow did get in, and had many moves and unique attributes of his own rather than just being a close clone of Meta Knight, I'd actually be really happy to see him in. Still, I stopped seriously considering him a few years back, and I'd still prefer Bandana Dee over him as well. Would certainly settle for Galacta Knight being an alt. for Meta Knight too, I'd kind of prefer it that way actually.
Outset Toon Link x5