I was just reading a WHATWG issue when I stumbled upon this quote by @leaverou

> Kooky idea: Perhaps a native html template tag could work to mark a string as HTML, and as a bonus, it already makes the contents highlight as HTML in today's editors.

Yes please :)
Maybe a safe version that escapes unsafe attributes and text content as well.

https://github.com/whatwg/html/issues/11669