The ability to have the browser request markup for inclusion via URL in the same way it does images is a longtime wish of mine. There are some potential securit

The ability to have the browser request markup for inclusion via URL in the same way it does images is a longtime wish of mine. There are some potential security issues... most of which we have anyway with the approach that requires JS in order to import content from another URL, and having a simple way to pull in document fragments would do away with a good chunk of the things we've had to have a CMS or site generator to do.