I think the idea of PDFs opens up many new possibilities, and your work is quite an eye opener. Design is largely missing from websites - it’s the same design over and over when it comes to optimizing for clicks.

Designers would thrive in a PDF environment instead of handing their designs over to implementation as it is now.

Maybe PDF is just the beginning and maybe a similar format can be thought up that addresses some of the concerns expressed here, and move over in time.