Dire Need speed helps you push offensively with shield, escape while shielding and even move toward a team mate faster so you can shield them. It also makes it harder for the enemy point tank to walk behind your shield because you're always manuevering it.
Cavalier. The premise behind this is that you can stay alive longer while your shield is down, so your shield can come back up. Cycling between both your health pool and the shield.
Heat Transfer is big value, especially with Aegis buff.
Last Stand is an essential card. You can increase it to 2-3 if you want to.