I don't understand the question. I haven't played it so I can't answer anyway but your question sounds like you're asking if the bootleggers made interesting game hacks or if it's all just changes to get the game running on bootleg hardware, but that wouldn't make sense because every game you mentioned has had both types of hacked versions done, like Cadillacs 97 and the Chinese Punisher and the hundred SF2 Rainbow etc. So your question needs to be way more specific.