Force fists. Like, a force weapon that's a power fist. It would be a force axe on steroids. I'd pay the extra ten points difference to have Strength 8 AP 1 on my librarian. Ok, maybe in the age of force axes and Iron Arm it's not so cool, but it would be neat at least from a modeling perspective.
Also, force claws. Come on - you're telling me you wouldn't spend 25 points to upgrade the force weapon into a force claw, and trade the bolt pistol in for another force claw? +1 attack, AP 3, and Shred on a weapon that can conceivably gain Instant Death? Awesome.