I agree with you, and when reading if you'd love to see FNAF 3 2D, i thought about him making FNAF 4 2D, i think FNAF 4 2D will be considered one of the scariest FNAF-related games that JujuProdGames has ever made.
And, there may be a possibility of him making games based on the original work of Scott Cawthon every year in August 8. (Release date of the first FNAF game of the Five Nights at Freddy's franchise.)