Kinda feels like powders should have their own item category that’s treated almost exactly like liquids, except that they need to go in a box/bag and don’t care much about temperature.
Doesn’t seem like that would be a major implementation challenge. Not necessary by any means of course - but it always looks really weird when I dump a couple pounds of salt and sugar together in a storage space and can pull whichever one I want out without a problem.
Overall it seems like food in boxes/bags should have some kind of spoilage benefit - not as good as refrigeration, but still better that being stuffed in with a giant pile of miscellaneous viscera in your trunk. 
