Engineers love the token table. Designers can't find the usage rules. Classic split.
Live component playground with code export — top-tier adoption driver (per Spotify's Encore postmortems).
Token semantic naming follows USWDS conventions, making cross-team translation effortless.
Versioned changelog signals maturity and gives PM teams confidence to commit roadmap dependencies.
Do / Don't examples are buried below the fold — usage rules are the #1 reason systems fail adoption.
Search returns components but not patterns or principles — half the system is invisible to newcomers.
Dark-mode tokens documented but contrast tested only in light mode — accessibility blind spot.
Promote do/don't examples to the top of every component page. Adoption typically jumps 30–40% within a quarter.
Modelled from 1,248 benchmarked checkouts and 11 research frameworks.
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