You don't have to be a burner to run Frost's offense and if his coach teaches him how to run with authority, he could be very effective running Frost's offense. He looked pretty darned good to me running the ball when he was pressed in to action when Lee went down. POB himself said after we hired Frost that he though he was a good fit for Frost's offense. I think Gebbia's athleticism from what i saw in the spring game is very under valued. The kid has some wheels. Austin Bunch is probably the most athletic of the 3 but I don't think he has Gebbia's arm or accuracy.This is a really interesting time for Nebraska at the QB spot. The guys on our roster are definitely more NFL types, even if Gebbia has some mobility, he doesn't seem like a guy where you design 5-7 QB runs in the offense. I wouldn't blame all three for transferring, but that could be a mess next year.
While POB has a bit more mobility than Lee, he doesn't have the quicks. If Frost and crew would happen to land a big name dual-threat QB, it's not out of the question he could start the next four seasons, ala JT Barrett, Hurt, etc.