The color coding wouldn't stop you from rotating the blueprint 180°. Do that one time, and you're stuck tracking down that one segment of track. If you can avoid that (or don't mind the troubleshooting) then awesome. I just know it'd frustrate me to no end.
TheRedSpade
A dual-level system did cross my mind, but the real drawback is that you'd have to remember which level is going e. g. north/east and south/west and place each signal on the correct side or rotate the blueprint the correct direction. Every. Time. Forgetting once will result in a signal being on the wrong side leaving no path for the trains to travel. I would forget frequently.
I read earlier that rails won't snap between two blueprints, so I already expected to have to lay the majority of the track manually. That coupled with what you've said makes it seem as though blueprints are useless for rail networks other than the aesthetics surrounding them. That's not nothing, but having to manually place all the signals at every intersection will be a chore. I guess I'll just have to minimize intersections.
Both ceiling and wall sockets can cause pipeline flow bugs
I wonder if this is why my blueprinted refineries don't output until I remove/replace the output lines. I don't have any floor or wall holes in the finished blueprint, but I used both to align things when creating it.
Shapez/2 are good examples. OP's only criterion missing is the clipping.
When I posted that comment I hadn't realized that I already unlocked walls with base building. I thought that they were in the shop, and I'd have to use foundations as walls until unlocking them.
That sounds like a tank with extra steps.
Oddly, after building more it looks bigger again. I'll post an updated screenshot next time I play.
KDE is available for Ubuntu. There's even an edition that ships with KDE (Kubuntu).
I don't know if you can call anything to do with fictional beings "standard". All of it is subject to interpretation and the whims of the storyteller.
That said, while it tends to be absent from modern lore, it's a very old rule as the other commenter said.
I'm not even sure whether you're referring to directories or actual physical folders.