Why doesn't Larian add new faces, hair, makeup, body tattoos?

[XGear]

I went to take a look at the MODS website, I have to say I was tempted and impressed with what I saw there. Lots of beautiful hair, new faces, classes, among tons of things that would make this game reach another level.
If these guys did this, why doesn't Larian do it? I heard that they prefer to "Support" Mods, rather than creating something official themselves. I don't like Mods, for me, they are flawed customization files that always cause problems on the computer, after all, they are not made by the game company.
Larian should bring more official customizations to the playerbase, if Moders do it, why can't the Larian team?