(Disclaimer: I know DRK wields a greatsword and does alot of damage for a Tank but it is not a dps "ROLE" so please keep that in mind, thank you.)
I love Greatswords and being a dps and the fact DRK is a Tank(when it should be dps class) breaks my heart. So I would like to present some ideas for Greatsword dps classes that would fit into the game.
1. Mystic Knight(Cloud Strife): A fighter that goes into battle by infusing their weapon and attacks with magic/elemental magic while also drawing power from their amazing strength, skill and acrobatics.
Weapon type: Buster Sword
Armor type: Maiming
Ability Type: Magic/Elemental/Strength based swordsmanship
2. Berserker: A furious warrior who swings their sword so fast and hard the very earth turns into magma as well as enemies into bloody chunks.
Weapon type: Heavy Sword
New Armor type: Fury
Ability type:Burning(Magma)AOE and raw physical damage
3. Death Blade: A Tormented warrior who uses Necromancer like abilities to summon spirits enhance their already impressive strength and physical capabilities and chill their opponents to the bone using ice based sword attacks.
Weapon type: Grave Cutter(Greatsword)
New Armor type: Fury
Ability type: Ice, Physical,enhancement and DOT
So these are the ideas I have and I look forward to your feed back as well as your ideas for new classes you come up with!