Hello!
First of all, stellar work on documentation and developing of this incredible tool! It has been extremely intuitive to use, as far as modeling and animation software goes!
I have a single Question/Suggestion: Is there currently a way to implement Variant Sets in the Creator? Considering it's function is to work with .json files, would it not be possible to integrate loading a set of variant group templates, such as the one for wood/log variants, and using them to preview the associated textures on a given face?
If i were to suggest an implementation, it would be to have to variant set loader use the textures path (provided by the $VINTAGE_STORY envirovariable?) to "collect" the Textures in question, combine them into a .GIF, and using them to preview all the texture alterations in the variant. This is provided that the GUI can handle GIFs, of course.