Job and Subjob system instead of classes?

[Gennosuke]

The way I understood it was that the new jobs are simply more focused play styles of the original classes. Monk being a specialty that you can earn as a pugilist rather than being a completely new job to level from 1-50(for example). That's how it came off to me in the battle reform blueprint anyway:

If that's the case then that takes care of some of your concerns up there. It doesn't seem as complicated & redundant when I look at it that way.

Thanks for your input, i agree this scenario does make the most sense out of them and it does address the concern of leveling up for example which would have definitely been a pain.
Yet again, my question as posted before, why not make the current classes these jobs instead of having 2 different modes? Surely, it can all be combined into one mode. Classes can be renamed to Jobs, and job names and can be replaced with the traditional job titles.

The only nice explanation is that SE is trying to be creative by adding this extra layer. I just cant help but feel it will introduce more harm than good in the long run. Time will tell.