The problem with the entire league imitating Nick Saban's style is that it is hard to replicate what Saban does. Saban is an epic recruiter. The characterization of him in The Blind Side turned out to be accurate. Programs that try to imitate his method will typically find themselves doing so with less talent. Additionally, Saban is an outstanding defensive coach, so his teams don't need an offense to put up big numbers. In sum, Saban's style of conservative risk minimization works with a talent advantage and a dominant defense. Without those two factors, the other programs in the SEC won't be able to do what Saban's team can. Thus, even though a well-coached pro-style offense can work (and Loeffler is as good a candidate as anyone to run that offense well), the rest of the SEC looking up to Alabama could still stand to use the basic premise of the run-based spread, which is to use the quarterback as a runner to create either a numerical advantage in the box of favorable throwing conditions down the field. If you want a succinct scenario for the end of SEC dominance, it's the possibility of the rest of the conference taking the wrong lessons from Alabama's success.