Call for Feedback: Fighting XSS with Isolated Scripts

Hi

In case any of you is interested in XSS mitigations, here's a short
proposal of a somewhat new type of XSS mitigation:

http://sirdarckcat.blogspot.com/2017/01/fighting-xss-with-isolated-scripts.html

There is a prototype implemented as a chrome extension for a demo website.

The things I'm mostly interested to hear about are:

   - Potential adoption concerns by developers
   - Design-level security flaws in the concept
   - Ways to simplify the design further
   - Related but unmitigated vulnerabilities

Thank you for your time!