What? Pipes that are actually... underground!?
Small changes concerning balance, gameplay, or graphics.
Augmented or new ways of transporting materials - belts, inserters, pipes!
Things related to oil and other fluids.
Is it possible to create a planner similar to P.U.M.P.? Specifically, one that can build in auto mode and, in addition to that, allow selecting two or more underground pipes so that the planner connects them using the shortest paths?
Probably, but that's not something I'm interested in doing. It's very possible as a new mod, though.