Well, in SS64 2, there is the ability to cut them in half in a rather dramatic way. When struck with a heavy blow that does not put them in the air or knock them down, the opponent stumbles back, toward the screen (his back to the screen as he falls back), the screen freezes for just a sec, then the screen itself is sprayed with blood. Right after the screen gets splattered, the top half of the opponent, from just left of his neck to just below the right arm, sorta slides off to the right with a gooky sound.
However, to my knowledge, the special move kinda stuff you could do in SS4 is not present. Is that what you were looking for?