Game Mechanics Upgradeable Ingredient Pouch for Ultimate Ironman

Before people say anything, yes, I know you can 100% all content in the game with the current inventory space. It isn't, however, very fun to keep having to throw out things. And yes, I do understand that's the point of ultimate ironman; barely any space, etc etc.

However, being able to upgrade said pouch via crafting or a quest of some sort, even if it's only one upgrade giving you one or two more rows, would be heavenly.