In terms of connecting to data sources I would rather decouple the querying and security layer. Companies are going to be focusing more and more on integrations. So if we have an integration layer in rest or graphql it would make building complex rich apps a much nicer experience. Basically what you have here is a competitor of many dashboarding tools like Tableau or PowerBI. I know you are thinking wordpress and cms, but these tools will eventually power dashboards as they blend with web apps.
