Good build overall. Not my style, because if I'm making a Mind/anything Dom, I would go higher on the Recharge rather than for Defense, so I can perma-Hold AVs. But for the design goal, it's pretty good.
I have some suggestions, nothing major:
1: Hypnosis is, to me, a really useless power. Controllers have some minor use of it to set up Containment for Terrify, but for Dominators it's just a "keep the next spawn from aggroing" power. I would trade it out for Combustion, and 6-slot Combustion with Obliteration. This allows you to swap the set in Incinerate from Kinetic to Crushing Impact, which gives you better enhancement totals, and you end up with the same +Recharge but also another +3% damage. You need a slot... I'd take it from either Tough or CJ, and use Super Speed for a -KB IO.
2: I think that Tactics is unnecessary... with all of the set bonuses for Accuracy and good Accuracy slotting in all powers, I would prefer to run Assault instead. Increased Accuracy is wasted after you reach 95% to hit against most everything, but a bonus to damage is always useful. I'd also prefer Ice Storm or Hoarfrost over either power. As another idea, if you don't want to go into melee range for Combustion, you could move Weave up to where Combustion is, and take Ice Storm for another ranged AoE, where Weave is. You'd have to keep Kinetic in Incinerate, but you still have 5 slots for Positron's in Ice Storm. At that point, I'd swap Terrify and Ice Storm's slotting since Positron is better in Terrify and Ragnarok is better in Ice Storm.