Describe the feature you have in mind.

I would really appreciate if you added Lead, Electrum, and Silver Sheets to the mod, I thought I had seen them in the available items, but I guess I was confused.

Does this solve a particular problem?

Adding sheets would help a lot as we could replace the plates, and sheets from other mods in our Modpacks, which increases cohesiveness, and improves the Create integration in particular.

One simple use for them would be to craft sheet-metal decorative blocks.
They could be cheaper to make than regular full metal blocks.

Even if the sheets wouldn't make it as an item into the mod, I would like to suggest you to make the textures so we can use KubeJS to add them into our modpacks.

Personally this overriding possibility, the nice textures, and the extra features are what I like most of Oreganized.

Doesn't create add at least sheets for silver and lead themselves?

Iirc it adds crushed silver/lead, but not sheets. I feel like if this were to be implemented, they'd need to have other innate uses besides simply existing as a modpack dev tool, since then people would be confused on why they exist if they don't have any uses. This would be better implemented as a custom modpack feature imo, you can make custom items and such with KubeJS / Json Things.

I agree, we could add the sheets/plates but they would be very lost without any uses. This should be on create's side or as a custom item added by the modpack, since the modpack would also be the one that adds actual uses for them