I personally like the spread. I think Rhoads envisioned our spread more along the lines of the way West Virginia ran it when they had Pat White at QB, Steve Slaton at RB and Noel Devine at WR/RB as a run based spread. CPR had to defend that team in the "Back Yard Brawl" when it was at it's peak so he saw first hand how hard it was to defend. Which is why Herman was brought in since he at a Run based spread at Rice.
So, after 6 years, why isn't this an effective system? What we seem to have now is more of a sack based spread offense. He has had time to get personnel in place to make it work, but we're continually thin - especially on the line.