I remain unclear as to WHY there are so many people who are so vocally certain NIN's damage will be based on DEX? It's right there in the descriptions for the stats: STR for melee physical damage, DEX for ranged physical damage. NIN is clearly a melee attacker, so STR.
COULD SE change this around? Sure. They can make NIN based on Piety if they wanted to. But why would they? Why add the complexity? "We know we told you STR is for melee, but we're making NIN DEX because... well... reasons..." The only reason I've found with even an ounce of sense is the fact that DEX is currently underutilized in the game - not enough reason in my mind to bend over backwards like this.
Far more often, people argue that NIN should use DEX because Ninjas are dextrous (and MNKs arent?) or because that's how it's done in other games (not even worth addressing this argument; FFXIV is not other games, and it's CERTAINLY not a tabletop RPG).
More on the topic for the thread, I plan to prepare for NIN by loading up on lots of metal and cloth. I probably won't bother with NIN myself, but SOMEONE has to earn a crapton of money crafting HQ gear for the ones leveling. It might as well be me! :3