Having spent half a decade encouraging people to make their pattern libraries public and doing my best to encourage openness and sharing, I find this kind of styleguide-shaming quite disheartening:
These all offer something different but more often than not they have something in common. They look ugly enough to have been designed by someone who enjoys configuring a router.
If a pattern library is intended to inspire, then make it inspiring. But if it’s intended to be an ever-changing codebase (made for and by the kind of people who enjoy configuring a router), then that’s where the effort and time should be concentrated.
But before designing anything—whether it’s a website or a pattern library—figure out who the audience is first.