Many Japanese MMD model creators are open to edit their models.
Still this never means you can do whatever you want to the models.
I have to say most modelers are negative to frankenstein models.
Editing means you yourself make new clothes, hair, or other parts from scratch for the models you want to edit.
Swapping heads or other parts is not editing. It is rather called frankensteining.
Think about this example. You collect many famous pictures. Michelangelo, Gogh, Millet, Picasso and other artists.
You cut their works and make a new patchwork picture.
Is this an art? Can you claim you edited the picture?
Or it can be compared to cutting dolls into parts to create a "new doll of your own".
Can you say you treat the dolls with love?
Definitely not! You just destroy original pictures or dolls.
Making frankenstein models is like this. You just destroy original models.
Modelers were tolerant to editing because they had the slightest idea that people would make frankensteins. They hoped pe