So I looked up Del Rio on Rivals and he was the #28 QB and a 3*. Just because he's been here a year doesn't meant he'll be any better than Morningwood, Jacob Guy or Max Staver. Eason is a 5* kid who could probably hold the fort down pretty well with a limited playbook. Playing a true freshman isn't ideal, but Del Rio was #28, not a top 11. Not saying Del Rio can't play, but we haven't seen it yet.
Supposedly Franks wants to RS, which is fine. However, we have Jake Allen wrapped up for next years class. So I don't want to take 3 QB's this class and I don't think we will. Ideally, I think we would want to take Eason and play him as a True Freshman, even if it's just mop up duty. There's a good chance that Grier is gone after this year anyway (not a certainty, but well in play). Jake Allen could come in and RS. Meanwhile, Del Rio and Trask are there as backups. I think that gives us pretty good continuity at the QB position.
I think once we get things settled that Mac will take a QB every class. More than likely high 4* guys with a 5* every 2nd or 3rd year.