I would go for a resculpted
C-3PO, but I would prefer him to be of the "
Ultimate" variety - ala the Commtech Stormtrooper. Give him a TON of articulation, and make him nice and shiny with just a subtle hint of the silver coloring in his lower leg. I would love to see that!
I don't think C-3PO has ever gotten more than the standard 6 points of articulation (not counting removable limbs), which is an absolute shame. It's not like he ever comes with any accessories that boost his manufacturing or materials costs, so throw us a bone Hasbro and get some articulation on the poor fella!
I wouldn't be too surprised to see a "Jabba slimed C-3PO" in the future at some point though, since it's the only semi-legitimate variation left for our favorite protocal droid. Several batches of green slime applied to him, from right after Jabba smacks his butt to the floor! Of course, a semi-removable eye socket would be cool too, from when Salacious was pecking at him like the ravenous little chicken monkey that he is!

Most likely though, we'll probably be seeing the rumored
Deluxe C-3PO in the not too distant future - on his Ewok throne/chair.
Should have the articulated knees you seek FX-7, but I doubt it will be the "ultimate" version that the rest of us would love to see unfortunately. Keeping my fingers crossed on that...
And while we're at it, I'm still patiently awaiting my
Bartender R2-D2 Hasbro!
