I would expect a class that uses thrown weapons as its primary combat methodology to actually just ignore the whole concept of "carry a lot of them" and just look like they're carrying 1-2 copies of the weapon in a normal combat stance, similar to what WAR, PLD, and LNC use with the weapons that they hurl at their foes. It gives a better aesthetic in general since you can actually see the weapon when you're not throwing it.
I highly doubt they'll do a straight "throwing weapons" class because there's not much variation you can do on throwing weapons that isn't just a copy of what ARC already does.
