Thank you for your input!
I'm definitely adding a modern duke option, that is something I wanted to do and forgot about.
Awesome! Oh, a couple other things.
If possible, having the Modern Duke skin affect menu/text screen Duke would be nice, as well.
Also if possible, some sort of file check on initial launch where the user has to provide the directory of their install of the original game. This would just be to reduce the risk of this project getting taken down for legal reasons.
I'm not familiar with game maker, so idk if that check could be done.