There’s a proposal for a new type of plugin for JavaScript-only single blocks. The aim is for people to be able to search for blocks and install them directly from the Gutenberg editor.
I think this is an exciting concept. There is a danger of people installing a block for one blog post — to then be ignored forever. I’m not sure how much of a risk this truly is, but I think it could happen.
I also wonder how much it could bring in conflicting styles in content. There’s plenty to think through — technically as well as UX-wise, but I like that the discussion is happening. The proposal is from Alex Shiels.