One thing that keeps annoying me in the game is the limitations on grabbing items in the inventory. You have 2 choices, to pick up the entire stack or to grab half of it, so if you only want to grab 1 or 2 from that stack you have to split it in half half a dozen times or more just to get a couple. I suggest to take the way of picking up items from Minecraft or Terraria. Either right click picks up half the stack and further right clicks on the rest of the stack places one of the item back into the original spot. Or right click picks up a single item from a stack and more clicks or holding the RMB will continue to take more from the stack 1 by 1.
