nice review, shame about the main 'shoulder' ratchet, I wonder if this can be tightened? The use of those common pin/rivet type fastners now makes it often difficult to remedy figures where before it was almost exclusively screws. I see the gray proto pic of devastator shows the arm looking really quite different with the thumb being formed from another scoop (from where?) which looked much better than the really quite lame looking head/claw arrangement, plus he has cables attached over the crane section linking both scrapmetal and hightower, maybe those components come with another later toy.....though I doubt, the details on hightowers crane and strut that underlie the cables has a totally different sculpt, I think this is a case of the final toy being simplified from the gray proto.
