Yeah I was just offering an explanation of course it is just pure speculation.
I have no problems with diecast other than the cost of course. I do not really consider it a gimmick like others do. This is because you making a product that is a higher quality collectable, rather than something that is made out of cheap plastic. I think it also makes it look more realistic to.
Now that I have to see to believe. I think those sound features are ok but sounds features of the figure talking without his lips moving is on the borderline for a children's toy and thus, another gimmick. Hot Toys needs to resist using gimmicks and just produce figures that look nice, which evidently this one does.