If this is really seen as an unpopular opinion, I can add that to my own list then. I'd love to see Kamek or Poochy as a 2nd Yoshi rep.
I meant Poochy & Ukiki as the unpopular opinion, should've specified.
I can't really think of anyone that can work as a 2nd Yoshi rep. Poochy is not really significant and only appears in few stages. He's pretty much just a glorified moving platform if you think about it. Maybe Kamek? Even though he's more of a Mario character...
Poochy is the most recurring Yoshi character behind Baby Bowser (Bowser Jr), Baby Mario & Baby Luigi (could also be Mario reps), and Kamek (also could be Mario rep)
He has appeared in all the mainline Yoshi games but one. He also always has a level dedicated to him, I believe. And he's a lot more relevant now; Nintendo has put him on the cover and disk for Woolly World.
Notice how I said Ukiki. Ukiki is the little monkey guy commonly seen in Yoshi. I think it'd be cool to see them work as a duo, like Duck Hunt.
Can you think of anyone more major then Poochy besides the 3 I said?
And note I never said Poochy & Ukiki would be better then Kamek. Kamek would be a better choice, but why not include both of them?
Yoshi will "deserve" another character when the subseries gets a major character that doesn't directly tie to the main Mario branch in some way.
And then when the series branches further away from the Mario tree like Wario did.
Seriously. Yoshi is just a "non-Mario" character in symbol only.
Yoshi is a non-Mario character because he is not a Mario character in Smash. This overrules all.
Also, ahem, Poochy. Poochy is major, compared to other characters at least.