Very good concept for modern e-commerce websites. I tested this plugin for 3.8. Found some problems in the first glance. Maybe you forgot to add localization of the strings. I searched in the source code and got no sign of localization. And I think design consistency should be followed in the plugins. The buttons and divs did not follow other pages in the admin area.
I added the source code in the fresh nop 3.8. But almost all references are missing:
In the next update, please fix the issues. And thanks again for the effort for the community. :)