This whole talk on Fate and by extension, Visual Novels is making me think about potential Visual Novels that may even have a slight chance of getting into Smash. Fate is one of them, albeit unlikely. The other two I can think of as a slight possibility are Ace Attorney and Danganronpa.
All three do run in their own problems, though and makes me think we may not get a VN rep at all unless another one pops up.
Fate is a bit risque, even excluding its original release with some of the Servant designs, even if they can choose more modest Servants and if Saber is modest herself.
Danganronpa is a bit gruesome, due to the nature of it and the only rep I can think that'd make sense is Monokuma, who I am not sure how they can make him work as a fighter unless they use all the Monokuma units from Ultra Despair Girls as a model for his moveset.
Ace Attorney simply has competition from other Capcom franchises(Resident Evil, Devil may Cry, even Okami) and you have to think about how Phoenix Wright would work in Smash. Though I imagine he'd be like his UMVC3 moveset, but smashified with evidence being a thing.
I'd like a VN rep but they all don't seem too likely or have their own hurdles. It'd be interesting to see a Visual Novel rep at least.