Even if you have a design system running, sometimes you need to work on new features in a prototype. So you need to have mixed some components finished with others unfinished. I would love to work directly on the prototype and, while the "design" of new components are not finished, publish all the prototype on "wireframe or grey mode" to avoid distractions of stakeholders. Probably is easy to render only borders and texts of every objects, keeping all the functionalities.