Thanks for the feedback Kaelig.
We have certainly been inspired by your work whilst at the Guardian and sass-mq has been an invaluable tool for us. Being able to standardise the how media queries are used across our entire codebase has been great.
sass-mq is also part of the GEL Foundations so its also being used by teams around the BBC.
I’ll open source Grandstand as part of the writing the next article.