I have created a custom composition consisting of two large power line towers and the 2 sets of appropriate wires. I have them all lined up as close as I can to their respective contact points. I can copy this unit and place it but when it follows the terrain the contact points between the tower (s) and wire (s) gets shifted out of place. I have read here what is available. First, is there, or will there be a way to lock objects in place concerning compositions. Second,  Will there ever be a "snap to" function available in the future?