I only choose no because I'm not entirely convinced the Bayo we play in this game is the "main version" and not her child self all grown-up until Kamiya, or any PlatinumGames dev, says otherwise. For all we know the "main" Bayo could easily return again for the fourth game just like that, so there wouldn't really be any point to revive someone who is already alive.🤷♂️
As for Viola, I don't really care much for her tbh, she can do what she want I guess.