i think shields should bedoable actually...
you've already given them a PSI pool and the augment move function, why not add
"as a swift action: At a cost of two power points the <insert protoss here> may errect a forcefield as the spell False Life. His caster level for this power is equal to his class levels +5"
means the 'toss can effectively regen their shields by spending vast ammounts of power, and they last a while, so can be brought up as soon as the protoss awakens for the day...
yey/nay? (somone reword it so its in vague english please... i'm tired.)