If POB is the QB for 2017, it's imperative that he see the field this year. I don't foresee him displacing Armstrong as a starter, barring injury, but you don't want his first live game experience to be as a redshirt freshman starter.
I don't see it's imperative that he sees the field this year. There have been very talented QB's who started as redshirt freshmen without seeing the field the prior season.
If POB wins the backup job, it's a different story. But, right now he's #4.
Who are you thinking of? I'm having a hard time thinking of one who had a strong season as a redshirt freshman, especially in a pro system.
I prefer not to have 2017 be a "throwaway" season during which we are breaking in a new QB.
That said, I don't know that POB should be considered the QB of the future. Maybe it's Bush for 2017. Just saying that if POB starting in '17 is where the coaches see it going, then they should get him live reps this year.
It's a delicate situation, to be sure.