I don't think Scott is a no brainer here. Its hard to tell. While folks assume that he's essentially TO Jr (all he has to do is update the old system!), its clear from interviews that Scott has long since been his own man. IMO, he's more of Kelly acolyte, than TO.
He did an interview once where he said that some of the old TO concepts are in the Oregon system, but Oregon runs them out of the gun. He also indicated that someday he'd like to see someone integrate TO's system and Oregon's system. The main advantage he'd like to see is that it could add some physicality to Kelly's speed based system.
However, on this matter, feedback seems mixed. Scott clearly has drunk the "Speed" Kool Aid that Kelly mixed. He chose his first landing spot on the basis of having a pipeline of available recruits. I have not seen enough UCF to tell if he's experimenting adding a more power approach, although that might be interesting for film junkies. It remains to be seen that Scott feels he should be the one to integrate the systems, and in the near term how he can run a Kelly-esque system that would mostly have to be imported to a state that churns out squatty lineman, walk-on level talent, and a couple legit D1 prospects.
His major challenge besides having to import everything, is what he describes as the chief advantage of Oregon's system. When Oregon steps on the field, they have a system that is built on all possible responses to a look. He notes that Oregon has been more successful than most, because most folks won't take Oregon's entire system, but only pieces of it. I get a feeling that this system doesn't apply just the playbook, but rather the whole process of training, practicing, etc.
What we're assuming is relatively easy (slapping some TO into the Oregon playbook) may not something that is near term achievable in Frost's early career as he is going to have many things to figure out, beyond reinventing offensive football forever.