I may be wrong, but I remember Yoshida saying something like this in the EW media tour: "Many people are asking for HW job design, but let's continue with ShB design", not with those exact words, but yeah, they heard our feedback but chose to ignore it for the sake of new players I guess. So what's the point of giving feedback if they're going to completely ignore it?
I very much doubt that they will honor those words in the future. I don't think this job identities rework will actually happen, sad but true.
edit: What I mean is, in the pre-EW they recognized that a lot of players were unhappy with the battle design, so I would imagine that if they really wanted to improve the job design, they would have done it by now in DT, or at least they would be taking some steps in that direction. So, I would say don't expect it to happen in 8.0.