“Design System Coverage,” an article from SuperFriendly
I completely agree with Dan that when it comes to design systems, completeness is an over-rated—and even counter-productive—goal:
Some organizations seem to hold up the ideal that, once a design system exists, everything in an interface can and should be built with it. Not only is that an unrealistic goal for most enterprises, but it can often be a toxic mindset that anything less than 100% coverage is misuse of a design system at best or utter failure at worst.