Thank you for posting this. I have been thinking about using something along these lines for awhile now. Next project that fits the bill I will see about building a proof of concept implementation and go from there. Have you had any exposure to any of the other projects similar to PostgREST that you have any thoughts about?
I've played with Graphile, it's not a bad choice if you are already invested in GraphQL. I'm not a GraphQL fan for a number of reasons, but it's a definitely a solid project.
