1st.. Shadows/assassins: Shroud, when this ability is used, the shadow/assassin cant do any form of attacks for the duration, Heals recieved are reduced with 50% It's a freaking defense ability, not a mean to be immortal, while u attack..
Juggs/guardians... Enraged defense. put this ability on the same way as Kolto overload... except for the tank tree..
Pt/vanguards shoulder cannon.. can be fired every 2 sec. and when depleted its on a 1.5 minut cooldown...
imo, these 3 classes, are the most Op in the pvp game.. And i see less and less other classes played than these..
give ur 2 cent, about other means to balance...