Adam, your "Separation of Concerns" article was what sold me on utility-first CSS. Thank you.

For anyone building React apps with Tailwind or Tachyons, I just open-sourced a library that makes it easier to reuse CSS classes in standalone, customizable components:

https://www.npmjs.com/package/nanostyled

(I think this is a React implementation of what the Tailwinds docs call "Extracting Components".)