Oooh an MK convo. Lemme get in on this.
I really don’t think Scorpion and Sub-Zero could be echoes. At all. This is coming from someone who absolutely
adores MK. Without a doubt my favorite western franchise, and non-Smash fighting game of choice. MK in Smash is probably my biggest want right now. But these two characters have
very distinct fighting styles. At best, you could maybe make semi clones out of them. Perhaps sharing basic attacks, with completely unique specials. But they would
need the unique specials. You can’t have Scorpion without the spear. You can’t have Sub-Zero without the iceball. And you can’t just mix them together and call that justice to the characters. If you wanna go that route, just add MK1 Reptile
As far as which one they should add...I think Scorpion. He is just ever so slightly more iconic, and has the more memorable move and catch phrase. Although, I personally like Sub more and would love to have a truly ice based fighter in Smash... It would be great to have both. But definitely not as echoes. Unique fighters, semi-clones, or bust.