You can't use a reworked job's level 70 gameplay as a frame of reference for anything, because the rework is specifically designed for level 90 play. You might as well be looking at level 10 gameplay in a new job with a starting level of 70. I know that some people here are oddly passionate about their Sastasha prog, but I personally don't care how a job is put together outside of max level. It only makes sense if you're looking at a job like BLM, where the job in question has been relatively untouched and you can get a feel of how older 'iterations' played as you progress through the levels.

The 'depth' of a job is largely a function of perception. You might think that a job lacks depth, but that could easily be a reflection of your own lack of knowledge on the subject. That's why players are more likely to think jobs that they've invested a lot of time into have more depth than the rest.