Hi! Thanks for your suggestion. I think I have an idea for how to handle it. I think i'll add mod setting to enable new items like lead chest. It will default to off (no chest enabled), but you can optionally turn it on to enable a lead chest item and recipe.
Generally, I try to keep these base mods to not add many extra items, focusing on raw items and intermediates and using those to alter vanilla recipes. But I think this might be a fun experiment. I'll probably give it a shot sometime this weekend.
