Have I written in ANY post that I don't think Nua would be a good DC? You're reading WAY TOO MUCH into what I've posted. ALL I've said was that it's riskier to pick a guy that has only been a career position coach from another program than promoting a position coach that you're very familiar with. You gave two examples of schools that promoted from within NOT hired from outside the program. I only pointed out that your examples were NOT the same.
My point in bringing up Tuiaki is that you can't just rely on someone's resume. Check out Mark Weber's resume. He was hired a BYU's OL coach a few yrs ago. Looks impressive but he destroyed our OL.
(I hope the all CAPS helps you understand better and take the meds. You'll feel better.)