Simpler license type variants

I sell digital design assets like Photoshop templates, stock images, and textures. Customers choose their license type (personal, commercial, extended) which dictates their usage rights.

In LS, I have to manually create these three variants on every one of my products. I also have to manually upload the same file for every variant. This is a lot of extra work that seems unecessary.

It would be nice if I could manage my variants globallly and have them priced as a $ or % increase from the base price. Like +20% for commercial license. And they should all share the same downloadable files.