The bubble Burts is a must now. If done that full Hybrid build, it's NICE. However, I kept getting stun locked by operatives. Once an operative finds you in a WZ they just hunt you down. At tleast with the Bubble you get a fighting chance.
Leave bubblestun to the healers as your shearing top end damage to get it while not having the cd/force pool to keep it up on others means you can be disregarded as something a bit above a mosquito in someone's ear, then when the real threats are taken down toy can be freely focused