I don't see how pipes or fluids have to do with the idea of mega projects and hydroelectric damns. I believe there should be more terrain dependent builds. hydroelectric damns. natural gas wells,bigger mining and oil drilling platforms could be potential building solutions as well.. I also believe a straight quarry and strip mines should be possible mega buildings as well. Frankly my factory overproduces by an astronomical amount and have some larger goals would be cool. The endgame is currently non-existent and needs some sort of goals.