Prometheus isn't Grafana's - so you can't hold Grafana responsible for PromQL either - but for scaling you want their Mimir product anyway. What scaling issues

Prometheus isn't Grafana's - so you can't hold Grafana responsible for PromQL either - but for scaling you want their Mimir product anyway. What scaling issues are you suffering - limits, performance, costs? Exploration is pretty good in Grafana - sounds like you're using dashboards to do discovery / exploration rather than their explore tool, which got substantially better in recent versions with their metrics encyclopaedia feature.