Personally I'm a fan of the power gap scheme.

I know the zone concept can create a lot of space for running back but I feel like it's hard to find 315 or 20 lb lineman who can actually move in space. So when they face big guy they often just get pushed around. I do agree though that upgrading the line is better than just hoping that Stafford can cover up some of their issues. I don't know. That's the way the Rams seem to want to do it though.