I think it could be best to have as vague a description as possible. That way people can do as you say and be as inventive as they want. As long as the script does the main feature required, the rest should be done by your own imagination.Will there be a more detailed description of script requirements added, or is "wardrobe scene" all we're going to get, and we can be as inventive as we want to be?
So for example, a wardrobe script - where you can change your actors clothes. Is an ideal description of the challenge. That way people can do it however they wanted. You could use individual components as you suggest (by exporting the char generator) or you could make it change actor spritesheets or whatever. As long as it done that, the rest is upto the writers creativity