better for him here in the state (aka HC at either Utah or BYU) ...unless Georgia DC or Texas DC or some crazy scenario presents itself that would pay him $2-5M/yr as a coordinator.
He's getting ~$1M as DC at BYU and I'm sure if things keep going the way they are, BYU will be happy to match a Scalleywag type DC salary (Scalley makes $1.33M this year) to keep him.
That said, IF Hill leaves, we have a lot of good coaches on his staff that are learning his style and intensity and I think they are all like minded. I could see a Poppinga or Ena take over for Hill and have a similar system and do well.
...but I want Hill to stay around as long as possible