Tried posting this on 4chan's /v/ board to little fanfare/acknowledgement (probably for a reason, was kind of f***ing around in the OP), but I have information likely to be real for the new game. I'll just copypaste what I had posted there:
- Geno, Skull Kid, and Silvally are the only fully new characters yet to be announced
- Geno moves around like a f***ing demon, like some exorcist s***. Nothing like what you would expect from fanart circa 2007
- Skull Kid is similarly terrifying, FS is nuts (he transforms, throws hands, and then drops the f***ing moon on you)
- Silvally is MVC3 Ammy
- Echoes are Hilda, Shadow, Isabelle, Medusa
- Teased mode is a quasi-Story mode that doubles as a retrospective on previous titles, I know it's speculated to be called Spirits but I genuinely have no clue what it's actually called