Thank you for the kind words! Both Joe and I are around if you any feedback. In terms of type-safety, we're thinking of it as an added layer. I'm optimistic, that since InstaQL provides objects as the interface, we could have more idiomatic types down the road.
This comment thread looks like it could benefit from Dgraph, which is an open source GraphQL-layer database built on top of a RDF n-quad store (badger).