The example I'd like to see is an application before and after conversion using the tool you're trying to sell here.

e.g. go grab one of the many TodoMVC[1] implementations, fork it, use your tool to turn it into a PWA, publish your changes to your fork, and let us all see the results.

[1]: http://todomvc.com

An example project using Pep. Most people are going to be skeptical that this can be done with a single line of code.