Thanks for the kind words Harald. Our next goals are:
Support for subscriptions.
Database-based demos.
Better integration with existing XData services and Aurelius entities.
You can use the GraphQL HTTP handler with any framework (like Sparkle, Indy, etc.) relatively easy. We don't have a ready-to-use demo yet, though. We will work on that as well.
Please feel free to add feature requests for GraphQL in the DEV feature request category.