I agree. The take-away from your story: Complex diagrams should be layouted carefully by hand, code for diagrams is good for very simply diagrams or structured

I agree. The take-away from your story: Complex diagrams should be layouted carefully by hand, code for diagrams is good for very simply diagrams or structured with litte structure of few levels (e.g. max 3 node diagrams; or 2 levels; or four layout quadrants).