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The two-zone layout (Partner/Platinum/Gold near the top, Silver/Bronze in a grid near the bottom) implemented the tier table literally, but it read as two unrelated blocks and left the lower grid orphaned between Security and Ecosystem. Checked what comparable projects do. FastAPI (~80K stars, closest ecosystem match) puts sponsors at 8% of the README; Vite, Rollup and TypeORM put them at 85-92%. All four use exactly ONE sponsor section with tiers as `###` subheadings — none splits placements across the page. Tier value is carried by order and logo size, which is also how FastAPI prices Gold above Silver. - generator renders every tier into a single block, highest tier first - markers collapse from SPONSORS:TOP/BOTTOM to one SPONSORS:START/END pair - all 12 READMEs migrated; the orphaned bottom block is gone - tier table reworded from "top vs bottom" to order-and-size, which is what the layout now actually delivers Incidentally, FastAPI's sponsor links carry utm_source/ref parameters throughout — independent confirmation that the link policy loosened in #445 matches ecosystem norms. Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>