Transclusion seems like a valuable primitive and when used well - it makes the web experience considerably richer (see https://gwern.net for example)
And yet, its usages are few and far between. In this post I'm trying to figure out - why, and how we can improve on that?
For any web-accessible file/page/document/etc. I want to be able to:
include it/parts of it in other documents
get notifications on change
have a set of common transformations I can apply to it (e.g. scraping and presenting a "structured data view")
A library that allows you to easily add live previews to your website