It's hard to give tips especially when you don't know the person's play style

My Mind/Psi Domi is squishy and I don't enjoy playing melee or in Melee range, so I have no melee powers, so [Smite] and [Midnight Grasp] would be out of the question
FOR ME.
Since my play style is away from mobs, I would need to be able to heal myself 'cause I may not always be with the healer and you need to be alive to give effective holds/debuff so [Life Drain]
I'm loving the control powers in Darkness Control because there's no [Sleep] powers like Mind Control, so I would pick everything (this is MY play style and someone correct me but I think control powers build [Domination] bar faster so the more the merrier?)
[Leadership] and [Fighting] is a must on all MY squishies (I may be squishy, but I should be able to survive long enough to die in a corner away from the mob so I can self rez

).
People may question this but for [Leadership], I always pick [Maneuver]; can never have too much defence as a squishy, [Assault]; one or two end reductions on this, [Tactics]; what's the point if I can't hit my target? For [Fighting], [Tough] and [Weave]
We can play around with builds if you want, what's your play style? want a cheap one or expensive one? These days with enough Emp merits, you can buy what you need, my blaster has all purples she needs, same with Mind/Psi Dom