I’d love to see a new helmet torch upgrade. For example it requires witchfire powder and other things to craft, you add the upgrade to your helmet and the helmet gives off light as a torch, and after a certain period of time it expires, allowing you to add another torch upgrade to your helmet. It would be even cooler to have animations, like the horns of your helmet light up with blue flames.
I’ve also been dying for a sort button. A button that will sort inventories. If you’re in a chest, your personal inventory etc, press this button to sort all items, so items of the same kind are places next to each other.