Remake how the inventory works

Everyone is complaining about how we have too little storage. But if we take a look, our storage is actually pretty good. bundles fix the main problem of having a couple things that take up an entire slot, and there arent very many essential items that you definitely need. I think a solution for everybodies' problem would simply be inventory extensions. you start the game in survival with only a hotbar as inventory space, but if you make a backpack, you unlock another row. to make a lvl two backpack, with two rows, you put two lvl one backpacks together. you can go all the way up to a lvl five backpack.