Re-making piping overhaul

Because no-one likes pipes under walls, and they aren't going to fix
themselves

- Arrivals should be done. It's being connected through Central at this
save

DO NOT MERGE THIS FOR NOW. This is unfinished and simply used to check
for mergeability. This will also serve as a trace in case something goes
wrong. I simply do not want to start over again in case someone moves a
pen somewhere