I think at heart it is still the same as it was.
We still go out and level up jobs.
It's just the abilities from those jobs apply to branched jobs.
Would seem a bit odd to relearn abilities you had already learned, just for the sake of leveling a job.
At the same time I do like taking a job from 0..

Best I can say is that I hope the system feels good in the end, regardless of how it is implemented.