Shafer or Hackett, neither will remain a coordinator for long. Both have shown they are creative and work well with kids. They motivate the kids to perform well above their ratings. They are both good talent evaluators. Some college will give each a shot within a few years, I have no issue with Syracuse offering either the job (I know, I may regret that, but I regret the GROB hiring, too), especially if the other stays on.
I prefer Shafer over Hackett because I think he is better prepared than Hackett for the HC position at this time.