Sanders has a proven track record of success. You look at 2003 and 2008-2010 and the stats speak for themselves. Took USC from 112 to 53rd IIRC. Tried to look up UNC for his years there, but had no luck.
Next year, IMO, is Bo's do or die. His guys (again), no youth and a semi-experienced QB PLUS the return of a lot of weapons on O. Load the deck and get the band back together.
My jobs on the line, I want a guy I have been in the trenches with who knows me and I know them. Sanders, if I am Bo, is my guy.