I also completely agree, in the sense YES you do learn what not to do as well learn what to do.
I think it's safe to say Aaron Rogers learned some from Favre about what not do to, that's why he holds onto the ball like nothing else and doesn't throw passes when Favre would of and been throwing INTs.
The only thing gain-able is MAYBE, not a guarantee at all in an improvement in the possibility for 1 win in a likely non playoff season.
To be a good safety, especially in this system, you need to be aware of everything on the field with great intelligence and understanding. He may have the instincts but none of the experience which can hurt them especially if they want to do what I heard Tilman talking about in an interview about how they shut down CJ the second half of last years game.
