[Kiwami]

You're right of course, if they want to replicate what was seen on screen they have to make it look toyish, so my remark based on Bandai making the belt less toy-like in color for the CSM release was stupid.

If they use diecast they can paint it over so it looks like plastic, but it would still give you some heft and premium feel.

I feel like the handle of the knife which cuts the Lockseeds would be ideal for diecast. Because you actually touch it when you use the belt and feel the difference every time. The silver lining throughout the belt could also be done with diecast, unpainted even.