I'm not convinced by the circular hole design, it really stands out in a world where most buildings are square. Especially because 90% of all beacons are sitting between smelters and assemblers which are both very square. Beacons are also often placed in a long line as well.

Maybe if the hole of ...

I wonder if the pathfinder can avoid getting run over by trains? That would be pretty important for any kind of modded unit.