I really like this mod. Here are some suggestions, I hope to change the design of the machines, because if I want to upgrade from normal to legendary, I need to place 4 machines diagonally in a row, which seems a bit strange. If arranged in a clockwise direction, the last exit is just at the entrance of the first machine.
Sorry for my english is bad.

try hovering the machine and pressing H or V

Ok ! I'm very stubid ! ^^"

flipping chemical plants is fun too, makes it easier to chain them