It is odd, but I think everyone can agree that there was a lot of room for improvement on the offensive line. If Key is an exceptional position coach (and I don't think Saban would go for it if he weren't) and you can get an upgrade at the position without losing a stellar recruiter (in Cristobal) it's a win/win.
The only place I think could be a strain is Cristobal's ego. This is just an observation from 3 states away, but Cristobal was a head coach before he came here, it seems like a demotion for him, to go from OL coach to TE's and Tackles...but I guess Cristobal isn't looking to work his way up thru the position coaching ranks. He's probably learning from Saban to become a head coach again. As long as he's happy...like I said, win/win.
Separately, the OL issue is interesting. Maybe we could get another thread going about it, but does this signal a change in philosophy back to more power football? Or is this an attempt to get someone better at teaching zone blocking principles? What season did Bama switch to the zone blocking scheme? Was it 2011 or 2012? Cristobal got here in 2013, is zone blocking his thing, or was Saban putting a square peg in a round hole?
I know I would like to see Bama get ride of the zone blocking scheme all together. Maybe some of the coaches on this board can explain the logic behind it, but it seems to me, if you can get the biggest strongest linemen in the country, why would you not line them up and just go out and kill everything that moves. It seems that confusion due to not knowing assignments is what kills this offense. There are way too many blown assignments, WAY too many tackles for loss, and entirely too many sacks for the amount of talent out on the field. What does it take to get a solid, consistent unit? Is the way forward a better zone blocking scheme, or switching back to power?