Thanks for the suggestion. We added MySQL support so we can work with Matomo now, but we're definitely lacking in documentation and tutorials. There's a similar issue with people using GA4, Snowplow, Segment, and anything else with a pre-defined schema. It should be way easier to use these systems with GrowthBook. Like there's no reason to even write SQL most of the time if we know the Matomo table structure in MySQL. We're hoping to solve that issue in the next few weeks.

Very cool. Snowplow CEO here - if you need any help on integrating with Snowplow just ask in our forums: https://discourse.snowplowanalytics.com/