A Ninja without Throwing might as well be called "Fighter" or "Assassin".
What I don't fully understand is why so many people want to get rid of a key feature ability and replace it with even MORE Dual Wield (NIN already has the fastest Dual Wield btw).
Other than the current Final Fantasy, please explain to me in which part of the series did Ninja's not have throwing? And which FF was throwing not actually quite useful? Because I clearly remember in FF 6 and FF tactics that throwing did/helped alot more than just regular katana swings all the time.
Keep Throwing. Keep Sange. Improve them. Don't get rid of them and just make Ninja some kind of melee happy "Kraken club" wannabe job.
Done.