Having been a BLU main FFXI, I am really disappointed in BLU's implementation so far. If it were up to me, I would have:

-Basically copied BLU's lore/concept from XI but into XIV. In other words make them Thavnarian Elite Guards/Special Forces.
-Scimitar as main weapon.
-Scouting Gear Melee DPS with a unique casting system (like Ninja). Main stat=DEX
-Blue Magic is part of their rotation like Ninjutsu is for NIN. Fewer spells but more impactful and are mostly used as oGCDs/buffs/debuffs(like Trick Attack) on target.


Moving FORWARD, I'd like to see them split BLU into 2 jobs. This can be accomplished using 2 different job crystals. BLU (limited), and BLU. The BLU (limited) job stone is the job we have for BLU now. Overworld and Carnivale centered, cannot enter duty roulettes, etc. The normal BLU stone would be released and start at level 60 and would have a limited number (~25)of pre-determined spells/skills/actions BLU can use (players cannot customize). Some of these spells and skills would have the same animation and name as the BLU (limited) version but have modified effects/potencies to balance them for real content, as well as a job gauge unique to them. For example, Offguard could be a 30s recast oGCD for non-limited BLU.