In my story, I wanted to play with the idea of the protagonist taking a hero-to-villain arc, and the antagonist taking a villain-to-hero arc, with the POV's switching to make the previous antagonist into the protagonist/deurotagonist either half-way through the story, or in a second book. Would this be too confusing for the readers, and if so, is there any solution to make it easier to follow, and not seem contrived?
I apologize if this is a poor question, as this is my first question on the website and I haven't read much yet to feel the waters of what's expected outside of the tour guidelines.