Classes were meant for another system, the original system had the freedom to use almost any skill from otger classes to make a pseudo jobs, marauder could be played as Drk if you equiped thm spells and dmg buff skills from several classes or play a RDM as gladiator with conjurer and thm spells, the system in ARR is too different to even think they can make classes viable again just think of them as a base for all jobs