A negative viewpoint.

You're thinking of the amateur scene at the moment. And how an amateur scene will try to 'cheat' the consumers.

I'm thinking of how this will entice professionals to come into the scene full time. Not one person, but a professional team or a company producing polished mods as a business.

Where support and bug fixing is a priority instead of "I'll see what I can do after work in the weekends."

Where your mods reputation and continuous sales will pay for your electricity. The modders are full time engaged and constantly fixing and improving their mods.

While you are thinking of skins as a mod, I'm thinking of total conversion mods made and supported professionally like a DLC. There are no shared 'assets' with other mods. All are original or from the game and working as a mod by itself. Not by combining all different mods from other modders just to get all the assets.