Dead horse here... But Personally I think they could have got it done... Not defending CBG...
Make his left arm a change o arm (should be no problem with seams since it's all armor), Give him a change o Head, different skirt and there you go... Too my knowledge they did not change the straps on the legs. Only thing that would be "out of place" is the armor on the right hand... But you can't even really see that from most viewing angles.
Would have been a bigger box and a higher price... But it would have been cheaper then buying a whole new 600.00 figure.
I am getting both because I am a Hulk fan.. But I don't buy the "it couldn't be done" excuse.
Edit
Leg straps are the same. Comic version they go all the way up the leg.