Astro was FFXIV's "time mage" until 5.0, when it was robbed of its time-affecting abilities (one of which actually had TIME in the friggin' name).

One can hope it's because devs wanted to be able to control spell/skill balance numbers without the variable of a class being able to extend effects.

I think quite a few AST players would be a bit pissed if the job was stripped of its uniqueness and flavor just to rebrand those stolen abilities as a new class.