I've got a grav/psi dom but dont think much of drain psyche, it hardly ever seems to hit or do anything. Maybe im just never in the right situation but it doesnt seem worth it.
I tried wormhole and it has its uses but its not that effecive in most situations. I rarely find a room big enough to make the teleportation worth while, the stun effect is usefull but doesnt lsat long and the damage caused is minimal
Same for TK thrust, its fun and usefull in some situations but you should only need it if your getting swamped and dont have time to kill/hold them, in which case knocking back one guy isnt going to help you much.
Mental blast is a strong attack but its range is a problem, handy if someones got a bit close and needs finishing off but better idea to keep them at distance and used ranged attacks.
My main problem is staying alive after, group immob, hold and psychic shockwave have aggroed the whole mob onto me