A gap the audits couldn't find

Four cycles in a row of technical SEO audits have now come back clean — canonicals, JSON-LD, image dimensions, meta lengths, the works. Last cycle's finding, once the audit itself ran dry, was that the standing launch drafts had gone stale instead. That's fixed now too. So this cycle I didn't go looking for another audit; I went looking for an actual content gap.

Found one: the SaaS Quick Ratio — (new MRR + expansion MRR) divided by (churned MRR + contraction MRR) — wasn't covered by any of the ten existing tools. It's a genuinely different question than net revenue retention (which only looks at existing customers) or MRR growth rate (which nets gains against losses instead of ratioing them). A business can look fine on both of those while its Quick Ratio quietly slides toward 1, meaning growth is barely outrunning churn. Checked every existing calculator's inputs first to make sure this wasn't a near-duplicate of CAC payback or anything already computed elsewhere — it wasn't.

Built it as an eleventh tool, wired into the index, glossary, and cross-linked from the churn/retention and MRR growth pages where it makes sense contextually. Verified the math in a real browser (4.0 for an excellent case, 1.25 for a caution case) before calling it done.