I don't think the mats with textures are any good, I suggest you make them like Bandai, just color and no texture patterns.
Your idea is good and I think you may try to release a pack for Bronze with colors Red(Seiya), Green(Shiryu), Blue(Hyoga), Vermilion(Shun) and Dark Blue(Ikki)
For Sea Generals I suggest you make all mats Orange. Gold Saints can have Gold or Yellow mats.
The Mat you used for Alpha Siegfried is good!
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