Not to derail but I can see BLU being a Scouting DPS. We just got a Casting and Striking DPS last expansion, so makes sense that BLU would be Scouting, especially if it's a support melee. Blue Magic would scale off of Dexterity (like Ninjutsu) and they would have their own equivalent of Trick Attack and Enmity manipulation to make them roughly on par as NIN.