...Another game series I wouldn't mind fixing would be the Gameboy Color version of the Powerpuff Girls three games...Man I hate that Powerpuff Girls show! That whole series and franchise has sucked large ever since the girls beat up Rainbow the Clown, an innocent clown! Yes, Rainbow had an evil alter ego, but that was completely out of his control. What an overrated show!
I have another idea: hack Super Mario Bros. 3 and the NES pirate homebrew of Super Mario World (NES), and Super Mario All-Stars and World (SNES) and come up with much better versions of Mario Is Missing! and Mario's Time Machine, combining the platforming and educational genres and giving us the NES and SNES versions we actually deserved. Here's a sample of such ideas, these are for Mario Is Missing!, shown in this link: https://www.smwcentral.net/?p=viewthread&t=89900&page=1&pid=1427975.