It seems that, in certain situations, a character's passive can be a liability, rather than an asset. Set comes immediately to mind. But, ACotD and WCotD also have passives that can be detrimental in some scenarios (e.g., opponent has certain shields). Are there any other characters?
Would it be interesting to have an option to voluntarily disable your own character's passive, either for the entire battle, or for a specific turn? Or is that a dumb idea?