I love getting figma files as mocks for things i need to implement. I love grabbing CSS from the figma, and I love that the design system allows the designer to not only export CSS, but export it in a way that has annotations (all the colors I get from my designers are annotated with "brand red 300 weight" as a comment, so I can use the right mixin.

Furthermore, I can also, when I'm building out the first-form HTML implementation of the mock, right-click and copy-as-svg the whole component, which makes for a nice stand in while I work on the rest of the code. It is great.