> Good IDE lets you move between the resource file and the code with a single click.

Well, not exactly. Most IDEs do NOT support clicking through a generated method call to the corresponding element in a resource file. Manifold is all about that. See it in action: http://manifold.systems/images/graphql.mp4

The Manifold fragments discussed here address only a narrow band of use-cases where embedding the resource improves the dev experience, like with queries and such. It's not for everyone, though.