The drone system seems like it doesn't fit in the scheme of things. Allowing conveyors and maybe cranes to extract from buildings would more fitting with the rest of the game. The drones look neat but it's too easy to get from a building to a drone port near the delivery building. If we were limited to using conveyors then it might make for a more challenging game in how the buildings and conveyors are placed. The question to the people who designed the system (not the game but the imaginary designers of these buildings and stuff) is why can't drones be used to move all parts everywhere? The drones as the only way to move stuff from buildings is not thematic in my opinion.