No, they couldn't clean them up, read what we told you, those are not rendered in real time like every other cutscenes in every other game, they're simple video files, only way to clean them would be to create them from scratch again, that would cost them time and money, and they wasted enough of both with the other problems with the first collection, like the fact that they had to rebuild the entirity of KH from a PS2 disc because they lost everything from the first game for example,...