Dex increase ranged-wep damage, and block/parry rate...how is this going to help Ninja, DPS? cause....they have dual-daggers...not ranged wep.
It's obviously going to be STR based, and possibly compete with DRG and MNK, for slaying accessories...but you won't be taking all 3 jobs into 1 run anyway? either because you dont want to, or because they dont want to.
They are going to add a gun job, which will be dex based, and compete with BRD.
Once they add new tank/healer, those will be *competing* with war/pld, and whm/sch, also...unless they add new sets of gear for new jobs...which i doubt...it would just add 11 new items/job to coil loot, and decrease the chance anyone gets what they are looking for.
Although it's kinda fits into the whole thing with *lv up ACN, and get lv50 SCH/SMN for free* so gear up MNK, and you get gear for NIN, for free, too. But it would be really boring to gear up 10+ jobs, separately