For Alexander? No. Nobody cares about that story for the most part. But consider if Coil and Alexander were swapped; difficulty and all. A greater number of people would be pissed off a major story element was gated behind exceptionally difficult content. This can lead to unsubs because frustration overtakes enjoyment if those people do attempt Savage, only to get crushed over and over again. You're more likely to win those players back, however if what they like is gated behind stuff they don't, it will drive them away. Otherwise, we agree. The midcore is where SE needs to find a compromise, and could actually put the storyline. Even more casual centric players can push themselves to that level a challenge. Unfortunately, Savage essentially goes from 6 to 11 with no in between. I wonder if they couldn't stack the difficulties on one another. Normal mode gets increasingly harder; with Brute Justice serving a EX Primal equivalent or thereabouts, then segue that into A5S and scale up from there.
Without weekly restrictions, people will farm within a few weeks and have no reason to continue subbing. Some people even had the god awful 210 Anima step down within a few days, though that was hardly the norm. Point is, Square has to gate content, lest we all consume it far too quickly. Making the Savage floors themselves "time gated" still leaves that hole in between A11S and A12S.