For the most part spoilage is universally a bad thing so expanding it is something I want but there are a few things where it's a bother if they are expanded such as iron/copper bacteria. (There's also things like Igrys cermet which you need to spoil but exceptions for modded items is probably out of scope unless you just let us list the internal name in a field for the exceptions)

Yes

Thanks for the suggestion! In version 1.2.2, you can give certain items a different spoilage multiplier or leave them unchanged.

Iron and copper bacteria keep their normal spoilage time by default. You can add modded items like Igrys cermet too. Set the special multiplier below 1 to make them spoil faster.

To find an item’s internal name, open Spoilable items in-game and copy it from the list. Then paste it into Mod settings → Startup and restart the game.

Awesome thank you so much.