I've played another game with the same core mechanic, but in my opinion, your was the better of the 2. Just more polished. The idea to display the key bindings on screen was vital, so you don't need to figure out what everything does every time it switches. Only, I'd emphasize the moment when they switch more clearly, with like an audio clip and some screenshake or something.
I also liked the joke with the difficulty settings. Reminded me about the hate Sekiro received for not having and easy mode and being too difficult and the response was just: This is the easy mode. Ring the bell for hard mode :p