I couldve sworn we had this exact thing back in Brawl where you reduce the distance you've been smashed in, i dont really think this is particularly new, what's new is that it can happen vertically now, not a whole evolution really.
Still interesting.
Regarding Sm4sh's position in this, not really a big deal, it wouldve been a bigger significant movement if this was still Brawl, except its not, New Smash's mechanics doesnt really stop it from not being hype all the way through and we still have a long way to learn when we get the game overseas, if anything this makes matches more exciting, personally, seeing people die too quickly isnt hype, neither is a match dragging to long, its funny how consistant Sm4sh is being to literally stay between Melee and Brawl in so many areas, which is exactly what its being.