Not gonna lie. Stacks are amaze. Huge QoL improvement. The fact that stacks don't work inside other Inventories tho, like creels or wicker picker, make these items almost a waste. So I have a suggestion, or perhaps the glimmer of an idea.
What if stacks only occurred inside alternative inventories, like Wicker Pickers and what not. It makes them useful again, also promotes mini inventories inside containers like a pelicans pouch could stack fish (actually not sure if it does or doesn't), and the wicker picker and creel could be serious haulers of their respective type of items. It might make for a more usable stack system, and bring life back to wheelbarrows. Could introduce new items like a cloth or canvas based sling to contain stacks of wood blocks, or boughs.
Perhaps inventory spaces added by travel sacks or bindles could have stacking capabilities (gets convoluted here, might be a bad idea) but it would further incentive pockets as gildings if one were so inclined
I don't want to make things harder or more obtuse, but hearing folks request that the wicker picker be able to stack but imagining the sheer amount of forageables that represents is wild. Plus when we couldn't stack meat so there were cabinets upon cabinets of meats, now I can fill one up and then just pull the excess for fat cuts. But if there were a meat based creel like item it could expand hunters inventories as well as their cabinets inventories like putting a wicker pocket in a cabinet full of blueberries pre-stackables
Tl;Dr If stacks were item based not inventory based would it ruin the QoL stacks give us?