Swap swift for hurdle if you want to pvp, and consider acrobatics for that missing lvl 30 power. I've never tried mental blast but heard its not so good, maybe try that on the test server 1st. If you chuck mental blast, also consider levitate or confuse as a replacement. Levitate helps you stack holds as they cant attack while lying on there back and it takes them a good time to get up too. (dominate/levitate/dominate) Not sure how useful levitate is in pvp, scrappers and tanks may have resistence, I havent really tryed that yet (you have a scrapper if you want to test it 
). Confuse is just so useful and fun, but doesnt seem to be for everyone (also isnt well resisted). EG. confuse those lost mind control things and they help you stack holds. Confuse a controller in pvp and his ice patch, or whatever the heroes are cowering on, will start knocking them up and down.
My MA IDs:
Fiend Space: 211464
hello everyone i have decided to make a dominator and i was thinking mind/psi mostly cos mind has sweet mezzes and the /psi is gr8 cos its unresisted and i havent tried it and heard good things. this is my build i have constructed in it i have chose SJ cos its fun and gd in pvp (lol i lvoe to pvp and like i said Psi is unresisted so i can wreak havoc) i cannot decide on my 30 power but i thikn ill go psychic scream for another psi attack or maybe levitate or confuse.
ok so here's my build.
---------------------------------------------
Exported from Ver: 1.7.6.0 of the CoH_CoV Character Builder
---------------------------------------------
Name:
Level: 50
Archetype: Dominator
Primary: Mind Control
Secondary: Psionic Assault
---------------------------------------------
01) --> Mesmerize==> Empty(1)
01) --> Psionic Dart==> Empty(1)
02) --> Mind Probe==> Empty(2)
04) --> Dominate==> Empty(4)
06) --> Combat Jumping==> Empty(6)
08) --> Mass Hypnosis==> Empty(8)
10) --> Mental Blast==> Empty(10)
12) --> Swift==> Empty(12)
14) --> Super Jump==> Empty(14)
16) --> Health==> Empty(16)
18) --> Total Domination==> Empty(18)
20) --> Stamina==> Empty(20)
22) --> Drain Psyche==> Empty(22)
24) --> Telekinesis==> Empty(24)
26) --> Terrify==> Empty(26)
28) --> Subdue==>
32) --> Mass Confusion==> Empty(32)
35) --> Psionic Lance==> Empty(35)
38) --> Psychic Shockwave==> Empty(38)
---------------------------------------------
01) --> Sprint==> Empty(1)
01) --> Brawl==> Empty(1)
02) --> Rest==> Empty(2)
01) --> Domination==> Empty(1)
---------------------------------------------