I really like your interpretation of the pass it on diversifier. I think you have a great start to build off of. On think I noticed is there's no way to tell what items still need to be collected when you pass it on. You can't click on dups so when you do and there's no feedback it can appear like you have a bug. I can't wait for you to add a cut scene or even an image of the rats all driving off to enhance the win.