In PVP the bubble its okay, not OP but also not useless, especially in Control and Salvage (THE CLASS on salvage). * First in pvp you SHOULD HAVE Armor of Light selected, that perk make you incredible tough, no melee atack can beat you down, even a hunter with arc balde will need 3-4 hits to kill you. A titan defender whitout Armor of Light on PVP is a fool... This perk is the most importat!!!!! * Gift of Light and Unbrokenable are both good options, depending if you want extra toughness or some team support (orbs, since you will melee kill a lot inside the bubble). * Use Bastion since is very unlikely to receive enough damage to destroy it ( excpet Supers) and the player will no going to fire constantly to the bubble making both Relentless and Gift of the void useless. * Use Untochable to pop the bubble more often. Then equip a good shotgun to explode any player who dare enter inside the buble whitout a Super. The Helm of Saint-14 its the ultimate troll equip, since the blindless its amazing, must have for a titan defender!! The only improvement I would make is when I pop out Dawn of Dawn it should push out any enemy inside the bubble!!, so we can a chance to repel some enemimes whit shotguns or some close combat skills, od curse the enemies can re enter the bubble. At lest some perk!