The human-to-Pokemon curse on Hunter J? I'd dig it, especially if we get a centric episode on her rather then the group's attempts to stop her. The unfortunate thing is that it seems like Hunter J already poached a Ninetales without being cursed in her debut episode. If it did curse her it couldn't have been of bad luck since she succeeded in her end of the deal last time ...
Maybe her curse is actually felling GUILT about her work. Apparently the Riolu episode did show her showing some abstract form of remorse. Maybe everytime she "catches" a pokemon, she'll feel increasingly guilty until she gets driven insane by it.