You obviously have evidence. The problem is in graphically exposing it. Why would it have to be wire-y? Because of the brilliance of juxtaposing hierarchy and wirearchy? I think it creates a tendency to show connectivity in a wire sense because of the hier/wire. The idea is brilliant but seems so very difficult to explain graphically without the graphic becoming cosmetic, a badly chosen word perhaps. The power of the word, to my mind, is graphic enough. Evidence enough. Why must we always draw it, if drawing isn't needed? That's why I mentioned Tufte.