Thanks for such a detailed reply! To be honest, I personally prefer the old sprites because they have that unique charm and really remind me of the original Coffin of Andy and Leyley style, which fits the game perfectly. As for the lost files, the old sprites can actually be found and extracted from the pilot build that is still available for download on your itch.io page! Maybe that could save you some work if you decide to add the switch feature. Thanks again for listening to the community!