No, the speed you can hand craft large amounts of most things instead of automating it undermines the game, not that you need to switch what you are crafting to make complex parts. This would be a great addition to the game once they nerf hand crafting, presumably through the overheat mechanic they already have implemented graphically. Ideally hand crafting say a few modular frames you are missing for a truck station should be quick and easy, but it should be very difficult to say hand craft 500 of them for the space elevator milestone.