I don't know man. There's one big thing that Kid Icarus has going for it that a lot of people seem to overlook. And that's the fact that Sakurai made the game. And it's clear that he loves it, what with all the representation it gets in Smash. Palutena's Guidance, all the items and stages, and if you recall the Kid Icarus cast was a big part of Bayonetta's reveal too.
With all that in mind, I feel like we're gonna get one new KI rep at minimum. And I personally believe it'll be Viridi. Sakurai could've easily left her out of Palutena's Guidance entirely, but he went ahead and made her a pretty big part of it (That's an extra voice actress he's gotta pay lol). And out of all the KI characters he could've used, he went with making a Mii costume of Viridi. The Reset Bomb stage is based off of her debut chapter in Uprising as well.
And finally, there's the whole "Reset Bomb stage deconfirms her" argument which I think is nonsense if I'm being honest. If she were being played on the stage, she could be replaced with Arlon, one of her army's commanders and one of the bosses in the game. Or you could make things even easier and just not have the projection show up at all. I just don't think background stage elements are viable reasons to deconfirm certain characters. Like with Toon Link or even Captain Toad.
Alright, I'm done ranting. If you couldn't tell I REALLY want her in the game lol