Pic related, which is basically done with this:
https://www.youtube.com/watch?v=semEVhy5t6UThe spinning shown is pre-rendered, so I'm not sure if you could apply this "shader" during dynamic camera movements.
At the least, you could have BW2-style looped animations and even attack animations (and transitions between the two) while maintaining the original sprite style.
Do the same with the fixed top-down perspective overworld and you can do a Kanto Remake HD all over again
