If you couldn't tell from the last post I made, Nintendo unveiled what the latest Super Smash Bros. game will look like on the Switch at E3 this year. They're calling it Super Smash Bros. Ultimate, and it's the perfect title for this game, because they're going all out in bringing back all previous fighters from the series as well as bringing back favorite stages to deliver the ultimate Super Smash Bros. experience! Best of all, Ridley is finally made a playable character, so as far as I'm concerned, the roster is perfect; any newcomers they add from now on will just be icing on the cake! That being said, Masahiro Sakurai said that they're mostly focusing on bringing back old stuff, so there might not be as many newcomers this time around. That being said, there is a new method of creating newcomers which he's calling "Echo Fighters", which are essentially just clone characters, characters identical to other fighters but with slight tweaks to their moveset. Lucina and Dark Pit are labeled as Echo Fighters, and they introduced a new Echo Fighter in the form of Daisy, whose based on Peach's moveset. Since it feels like making Echo Fighters wouldn't take as much work compared to a normal, unique fighter, it's possible that we could get other Echo Fighters to meet certain fan demands.
With that in mind, after ruminating a bit, I've come up with some ideas for Echo Fighters I either would like to see or wouldn't mind seeing in Super Smash Bros Ultimate. I should mention upfront that I'm not including Dixie Kong, Dark Samus, or Shadow the Hedgehog/Tails, because I feel they have enough unique attributes going for them to be more than just exact moveset clones of Diddy Kong, Samus, and Sonic respectfully. Same goes for Waluigi and Luigi; despite being an Assist Trophy again, there IS always a possibility that Sakurai could update the game to remove him from the Assist Trophy line-up and make him playable, but if he is, he'd better be unique; much like Wario being too unique to simply be a Mario clone, the same logic applies to Walugi (perhaps even moreso, given how ridiculous and surreal he is).
See my suggestions after the break.