I still haven’t actually used the local ones (only have time to game on weekends and spent the last couple playing SkyFactory5), but I intend to use them for my iron factory. I have 5 pure nodes where my hub is currently located and intend to set up some pure iron ingot refineries and train the water in from the lake to the southwest. This blueprint may not get used much in this save, but I liked the idea and wanted to at least have it available. The vertical clearance was intentional. The idea was that I’d use the space to decorate, but you see how far that went.
The water trains for iron will almost certainly be separate from the main. I’m picturing the rest being connected to the skyway and possibly each other. Maybe different systems for different areas just to add a little challenge to the junctions