[coxmi]

I don’t see how light DOM slots could work since it’s just replacing element.innerHTML, but a non-style-encapsulating shadow DOM option would be great.

That, and some progress on template instantiation, reactive DOM primitives or DOM partials, so we don’t have to concatenate strings and overwrite el.shadowRoot.innerHTML, or do direct DOM manipulation for any updates.

Until that all exists, and there’s a simple API to bring it all together, other frameworks will eat this space completely.