i would love to see the BLU 2hr actually be useful. i was thinking maybe it could be used to facilitate more serious magics. Such spells who's power is unrivaled. But in order to even have a chance at learning these spells, you must first be under the effects of Azure Lore. Since the introduction of this job into FFXI avid Blue mages have wished to wield spells like Spike Flail, Colossal Blow, Citadel Buster, Medusa Javelin, Oblivion Smash, Blighting Blitz, the wyrm family's dreaded "Wing" attacks, Terraflare. These awesome spells could then be available only while under the effect of Azure Lore. mp consumption would naturally be great, also the time limit of the BLU 2hr would have to be extended to compensate for casting times. Similar to how a skilled summoner can achieve 4 of their avatars most powerful bloodpacts before their 2hr status wears off or how Odin and Alexander must be used to provide either serious damage, or serious defense to the battle.
PS: My favorite Blue Mage Spell has always been Grand Train.