I've been thinking about this for a while, but I really would like a C3PO with reasonable articulation and correct coloring. The elbows could be articulated and judging by the few PERFECT Saga figures we have (Bespin Luke, Chewbacca), the elbows could even have that pipe-bracket-thingy to make it accurate. The wrists and knees should be articulated, and of course his waist should be also. That's be neat if he had a rubber waist-line with wires painted on it to simulate his waist wiring. Maybe I've forgotten, but I have yet to see a C3PO figure with a silver leg, too.
I dunno, I just want the "ULTIMATE" C3PO figure, it just seems to me like figures are slowly improving, and yet C3PO is practically the same mold from '92(?).