Raubahn Aldynn is an Ala Mhigan Blade Dancer, his skills were honed in the Gladiatorial arena of Ul'dah.
http://na.finalfantasyxiv.com/lodest...mmortalflames/
"Using winnings amassed during his reign as gladiator champion, Raubahn Aldynn, the "Bull of Ala Mhigo," purchased the Coliseum in Ul'dah, and by doing so earned himself a place amongst the infamous Syndicate. However, unlike other Syndicate members who, blinded by their wealth, fancy themselves the true leaders of the city-state, Raubahn has remained faithful to the sultanate's nobility, openly pledging his allegiance to the sultana. This is why, after a long hiatus, the ever-popular warrior returned to aid the young ruler in readying the city-state for the end of the Sixth Astral Era, and the dark days that would follow.
Aware that he would more than likely receive little cooperation from his fellow Syndicate members—as ever too occupied with their infighting to see that which truly threatens Ul'dah—Raubahn sought the revival of the Immortal Flames, which under his lead would help protect the sultana and her nation, while sating his thirst for revenge on the Garlean Empire."
Motto:" The line between victory and defeat is drawn by the swift and trod by the dead."
Weapons: Tizona─a cursed blade taken from the hands of a former rival after defeating him on the bloodsands.
Even in this, the term Warrior is used in broad terms, not unlike the Title of Warrior of Light.While he did indeed use his rage to fight for our freedom and in vengeance of Sultana Nanamo Ul Namo.(whom he believed slain by traitors atm)
Understand, he has in the past showed cunning and a methodical technique in his swordsmanship not attributed to rage but calm, collected skill and focus.
https://www.youtube.com/watch?v=KMKM8D8VQNw
I sincerely hope a class/ job based on his style will be released in 4.0, as it would be the perfect time time to flesh out more of his character, back story and culture of Ala Mhigo aswell as the martial histories that seem unique to them.
As for Warriors in this game using Greatsword (or swords in general) realize what you asking for. Not only would skill use animations need to be redone for Warrior, so to would revisions to lore as every mention of Great Axe use would need to be retconned simply for the pleasure of your glamour request.
This being inherently the problem when requesting changes to a system... once you acquiesce to the demands other will always ask for more... Here we are going from "simple" glamour unlocks to full scale animation reworks... The system is fine as is.