The wire stacks in 500 why not everything else (yea, I've only got MK 1 Storage containers)
But an option for constructors and assemblers and miners and smelters not to feed onto a belt singly, so when crafting it fills an entire slot, a splitter splits the stack 50/50 or 33/33/33 and an option for a merger to make a full stack before moving on
portable miners stackable 3,
Just an idea 