Very late to this, but this is fantastic. It looks great! I couldn't' believe it. Digging further, it appears you can add link callbacks to trigger actions after a link href is clicked within the viewport. This is useful for launching windows or managing calls within the application.
However, this binds one to the Edge eco-system, which is already aggressive in marketing and overriding associations from other browsers in the registry. No Edge, no WebView2.
Very cool! Thank you.