There is a huge problem when creating complex contraptions using a lot of logic. Firstly. It gets messy. Very quickly. I was building an elevator and I noticed even for one floor it became a mess. My suggestion is adding some contraption such as the "Microchip" from Little Big Planet. Logic is a heavy part of that game and Microchips allowed us to easily build complex logic systems without having a slight problem. If you could add something similar It would add a lot more depth the creations, and logic systems.