Blueprints: Research how people use them

Do we think recipes are being used in the wild yet? Do we have examples of that to look at?

Plugin authors are starting to use Blueprints in the plugin directory, which provides some great examples. What other examples are out there? Understanding their perceived strengths and shortcomings would be greatly useful for building Blueprint builders and other experiences. Do people resort to piping PHP often? Do they mostly use it for including additional plugins? etc.

Here's a few examples I could think of, feel free to edit this issue and update the list:

• https://joost.blog/plugin-demos-with-the-wordpress-playground/
• https://repl.wpgraphql.com/?wp=6.4&php=8.2&playground_url=%2Fwp-admin%2Fadmin.php%3Fpage%3Dgraphiql-ide&name=Hello+World
• https://translate.wordpress.org/projects/wp-plugins/friends/dev/de/default/playground/

cc @tellyworth @StevenDufresne @jdevalk @akirk

Start by reviewing the three linked Blueprint examples and the plugin-directory examples mentioned in the issue. Document how people use Blueprints, including perceived strengths, shortcomings, piping PHP, and inclusion of additional plugins. Done means the issue contains a useful collection of examples and usage patterns.