Especially on rail worlds there will be so much oil, just doubling all the refineries will be much easier than dealing with Adv Oil Processing after this change.

I'll attach mine too. This was during the "Catching up" phase.

I think the Electrical network analog was the right way to go. Just remember that a pipe is not a wire, but should be modeled as a transmission line. https://physiology.kitware.com/Images/Circuit/CircuitHydraulicAnalogyTable.png They use pipe for wire, but really every pipe element should be a pipe ...

On the shortcuts, please just use the same ones Windows or whatever the OS is (So Cmd+Z on Mac) uses. You can actually just implement an actual clipboard handler, link excel/photoshop and many others do. So when you paste in a different program, you will have to think about do you want a rendered pi...