I think the question about the backup QB is pretty fascinating. Packer writers might be obsessed about veteran depth at CB, which I find to be a red herring, but the QB spot is a different matter.
Developing a younger player has risks as we saw this year and in the other year of the collarbone. Having Rodgers and Flynn succeed while Harrell, Coleman and Hundey failed is about as good an illustration as you could have of the risk/reward.
But just as with any FA, the hit rate on vets is still going to be 50%. Keenum and Foles are working now (or were up until 7 PM on Sunday) but history suggests they will fall back to earth. I have no feel for Hundley's prospects.