He's not being represented poorly at all. His original incarnation makes him a totally viable candidate for an Echo fighter. Just like Ken, who also diversified himself from Ryu with each SF installment to the point of being totally different. However, we know two things: Due to the amount of effort that it takes to readd all the veterans, we're getting VERY FEW original newcomers added to the roster, like 3-4 AT BEST I'm willing to bet tbh. 3 more after Ridley I'd say. Thus, point number 2, echo fighters were distinguished for the sake of having a means to beef up the number of additions to the roster. I'd say 3 more on that end too. Making it a total of 4 Echoes, and 5 newcomers. 9 characters total by December 7, + DLC after. That seems fairly reasonable. That's basically an original character every 2 months, considering they likely only just finished Ridley, Inkling, and polishing all the vets. I mean, Sakurai's statement was right there at the end of the video. 2 months per character is a very reasonable pace if you tally up all the man hours + playtesting, and other stuff going into the game.
As such, with 3 "slots" remaining for original newcomers, I HIGHLY doubt Sakurai is gonna waste them on clone characters, or lesser popular picks. He wants to keep the hype going, so this time around, IMO, he's gonna go for very safe picks overall, that will satisfy the highest number of people. Echo Fighters on the other hand, are there to beef up the roster some more, by adding in other popular picks that can be done with very little overall effort.
So all in all, I'd say people should think very carefully over what the 3 Original Newcomers are gonna be. I have my doubts we'll go beyond that by a lot, and that they'll be picks for "representation" he's gonna go for popularity most of all as that generates hype. Fan favorites. As such, when it comes to echoes, if you look carefully, you can see what sort of options are available. Personally, given the signs, I feel Shadow and Dark Samus are pretty much a given at this point, Dark Samus moreso than Shadow. And Ken is a personal wish, that I think has a very very good chance at happening. But it could really be anything for echoes, from Metal Mario, to Louie, to Funky Kong, to **** knows what else. Ken, Shadow, and Dark Samus are my predictions for Echoes though, because they make the most sense. As for the original newcomers, I'm gonna play it safe and go with popular ballot picks. So in my eyes:
K. Rool
Banjo
Geno
Rayman
Isaac
Simon Belmont
Are the mostly likely candidates for newcomers. Hell, K.Rool is pretty much guaranteed imo. The other two I chose out of personal preference. And then there's also DLC after the game launches too. So we'll see. But stuff like Springman, Rex, Deucideye, Ashley, new FE character, etc... I just flat out don't see happening.