Why do you need a metric store?
The metrics are inconsistent.. again!
Without documentation, systems fail and progress is lost. Our civilization collapses.
How to boil down the health and growth prospects of a consumer business in few meaningful KPIs? What are these KPIs for your business?
Do not just give everybody access. You know your data is not ready for someone who barely knows SQL to get a trust-worthy insight. Be computationally kind with your non-technical audience.