The short answer
Five numbers, every month, on the same slide. New signups, activation rate, free to paid conversion, net revenue retention, and blended CAC payback. Those five tell the whole story: top of funnel, whether the product works, whether the pricing works, whether customers expand, and whether the economics hold. Pipeline coverage and MQLs are the wrong language here and reporting them invites the board to manage you like a sales-led company. Add one leading indicator you genuinely believe predicts next quarter, usually activated signups rather than raw signups, and hold it constant for a year so the trend is readable. Boards forgive a bad number far more easily than a number that changed definition.