The problem usually occured is probably the missed concept that they all hold their own role and are frequently missused in them, since Hunters are masters of range and scouting they are meant for distance and speed and warlocks have the battle recovery for longevity and low agility so they have to avoid speed confrontations but everyone goes for the run and gun shotgun warfare of short range that compliments the Titan roughly. It's all really perspective so I can't say one I hate the most