As much as Titans piss me off on the regular this is the type of stuff I think exotic armor should do. Truly significant but not necessarily game breaking perks. This "gain an additional grenade" stuff is helpful but it doesn't give me a real way to change my play style. Exotics become truly coveted when they allow you to add dimension to your chosen subclass. Maybe only allowing void based weapons to fire out of the bubble would make it slightly less game breaking.