I kinda feel like they're going to add new specs to each of the classes. To even out the playing field, like how arcanist has summoner and scholar. So maybe something like
Paladin (Tank) - Dark Knight (DPS)
Warrior (Tank) - Berserker (DPS)
To be entirely fair I''m not sure about lancer
Monk (DPS) - Ninja (DPS)
White Mage (Healer)- Time Mage (Support/Healer?)
Black Mage (DPS) - Red Mage (Support/DPS?)