recently I remember seeing something like this in apps like Github or Discource IIRC, and I think this type of UI can work better for our block embeds.

I remember that we wanted to show embeds as similar as the actual content, but we haven't found a way to make readers understand that that piece of content is an embed while making sure the reading experience is preserved.

This proposal aims to make embeds more explicit, and make sure is clear that the content is coming from another document.