While I do my best not to limit how much I compare Satisfactory to Factorio, There is one thing I'd like to see be copied over, The ability to reduce the storage capacity of a storage container that the Logistics system/belts can fill.
Example: Splitting the output of my Rotor Assembler. One line leading off to a personal container for hand-crafting use, the other leading to a Motor Assembler. Rather than having a massive amount of rotors be split off to the personal storage, I could "X out" most of that container's available storage slots. So as far as the conveyor belts are concerned, it would be "Full" even with only having two or three stacks of Rotors in it.
I could still manually deposit items in to the X'd slots, but the belts could not. Allowing me to have a small amount of Rotors on hand, while the majority were sent off to become Motors.