No, I mean risky in the sense that any time someone starts working with the underlying XML, because it is not exposed in the tools to be altered safely, there is added risk of unanticipated consequences, or that some other 3rd party or custom elements may suddenly break. That risk is reduced (though not eliminated) by the elements being exposed in the editor.
You may well succeed... I am just saying that making changes outside the editor carries additional risk, and I would prefer that more bits be exposed for "safer" editing.
