I belive it will be very helpful if the devs can add batch number at crafting. It will help regulating overuse of supply. Specially in hydroponics bay where water resource are being consumed by crew and for crafting. If there is a max batch number then it will be helpful to regulate essential supplies.
EDIT :
Please change Toxic waste generation of Advance scrap smelting from 150 to 200
Also why two food rations