Thank you very much for insightful comment and kind words!
And you are right about deliveries, that part needs a lot of tweaking regarding time and connection to orders. And controls wise, I messed up the speed of lifting up and down (remember to multiply by Time.deltaTime Unity users) , and I think that enchances the cumbersomness of it. And I'm glad you liked the atmosphere, I would never think that I would be able to create ominous forklift simulator.
Maybe that's because the true secret is what is inside the boxes?