NSW design system is built on top of the DTA design system. They've done exactly what you're suggesting

https://www.digital.nsw.gov.au/digital-design-system/compone...

ah, did not know that. thanks!

The Digital Transformation Agency (DTA) is the Australian government agency behind the Design System. Paul Shetler, the former CEO of the DTA, quit after a philosophical disagreement with the new minister. Shetler's company is now consulting with the NSW government on a lot of their digital transformation work, including their design system.

As did the former CTO.