>>7869592Metal Cooler is probably a lot more simple for people to make. Final Form looks way better, but has a lot more sculpting and intricacies with the design, so its probably a lot easier for them to just do the designs without the head crest, shoulder protrusions, spikes, etc...
A cheap, massable metal cooler would be kinda fun, though. There was this P-Bandai figure that came out a while back, but not posable obviously, and I think its kinda hard to come by now.