It's so cool to see your project grow! It's getting better and better!
I have a suggestion. When saving the animation with the frames as different images the "_" is added to the name to separate the numbering and tags. Wouldn't it be better just add the numbering without "_" while the artist chooses whether to separate the numbers of the names and the names of tags? Because just adding the "_" to the end of the name and it will happen, but maybe the artist prefer another way.
Another suggestion is to export just a selected tag.
THANKS! <3