Marauder becomes warrior, not dragoon.You do not, however Archers turn into Bards, which are more utility based, and Pugilists turn into Monks, which are more damage based. Also the Archer limit break is an AOE healer, Monk limit break is huge damage to one target. There's also Marauder, which are the highest physical DPS right now, which turn into Dragoons, with lots of mobility.