Audio is still kinda weird. You can also copy entire foundations instead of zooming in to the "real" factory layer. The launchers act as tunnels from the first game and stay on the same layer. That means you don't have to constantly move from the 1st to 2nd layers when bridging over already established belts. They aren't variable length yet, so that means you have to adjust for the constant 4 belt width when you start making more compact factories.
Audio is still kinda weird. You can also copy entire foundations instead of zooming in to the "real" factory layer. The launchers act as tunnels from the first game and stay on the same layer. That means you don't have to constantly move from the 1st to 2nd layers when bridging over already established belts. They aren't variable length yet, so that means you have to adjust for the constant 4 belt width when you start making more compact factories.