Don't have the book to hand so these may not all be possible when you check the detail.
Psyker (Pyromancy fits with the pyrae robots chanelling powers through them, exploding fire out of the joints/weapons)
Preferred enemy (targeting software package, lots of lenses etc.)
Crack shot + assault cannon or cyclone (if still a USR, same conversion)
Shrouding (Thermoptic camouflage generator - paint as blending into base up to waist)
HULK SMASH + mark of Wulfen for lots of s8 AP2 hits at normal Initiative (Motor overdrive on arms) - might want to check this doesn't specify monstrous creatures in its rules.
Fleet (motor overdrive on legs): very useful for anything CC based