Those hoppers are very expensive.
The point is too have it in one block.
Anyway, I feel like you don’t like the idea. Why? Do you think it’s imbalanced?
I have a mass storage for pumpkins, it loads a fermenter. Sometimes I want to load in the fermenter something else. But there are always pumpkins in that storage. A LIFO mass storage that is not bound to item type would solve this problem.
Also, a cheap variation of this block could be used to load and unload machines. It could be made of plastic and could store up to 1000 different items.