Titans should have different 3rd skill on every class. Like Arc class should have something melee related 3rd skill Void class should have like riot shield that you can use one hand to shoot your primary or secondary weapon. Overshield with void would be cool too or something like that sunbreaker could set the titan in flames and have a little dmg increase and can take more dmg for a little while. But then takes a while before health recovers.