If nintendo didn't have a smash reveal it would be, frankly, very ****ing stupid.
Well, this is Nintendo we're talking about. 20 dollars a year for the same dismal online service we've had for a decade, let's just offer free video games instead of virtual console Nintendo.
So if KOS-MOS is our fighter, I question what her gimmick will be? I'm admittedly an outsider to the Xeno series
Joker has Arsene
Hero has the Command Menu and Magic
Banjo has Wonderwing
Terry has his Go moves
Geno's is an easy one: Timed Hits!
So what would hers be?
There, I snuck Geno in there so it's on-topic!
You know, I think this is a ruse pattern. Not that you're throwing it out as a ruse, just that people are taking this "pattern" a bit too seriously. Faithfulness to the original game is first and foremost the only "gimmick" Sakurai seems to be aiming for anymore - the fact that a character comes with a "gimmick" is a byproduct of that. Calling Wonderwing a gimmick is the thing that really brings the pattern into question, because it's not really a character defining gimmick - it's just an abnormally good Flare Blitz with a use limit because otherwise it'd be ****ing broken beyond reason. Banjo's pretty solid without it and it's really just a way to close out stocks super early on an opponent doing predictable things around you. Honestly, the only character so far that isn't totally solid without the feature you've listed here is Joker, who I think many would agree relies on Arsene to not just be another Sheik.
I mean, it sort of carries an implication that the new characters in Smash 4's DLC cycle brought a "gimmick" with them, and that by that logic the new characters in Ultimate brought a gimmick, too, because having a gimmick is just the new design methodology, but really, we don't see that, unless you want to stretch like Inspector Gadget to say that Ridley's gimmick is that he's a frighteningly large midweight and that Isabelle's gimmick is being Villager but with a command grab and Incineroar's gimmick is being the shillmon.
I dunno, I just don't think we're guaranteed to get a fighter who brings something totally new to the table by way of their faithfulness, despite how tempting it is to say otherwise.