I love playing my dominator class in Warfronts, I think it's an interesting, fun to play spec that is one of the more unique class options of Rift. From 10-59 dominator can make a huge difference in Warfronts, but I feel like all the mage masteries are meant for DPS, tanks, and heals. There is one mastery at 61 which is meant for dominator, but every other option available at every tier is designed to boost damage, healing, guard bonuses, or movement speed.

I think probably the best thing they could do would be to add a general "when a control effect is used" type of mastery for mages, which could be applied to all specs but would obviously be the most helpful for dominator. Maybe even control effects spread to a nearby target once every so often, or can heal a percentage of caster's hp.