Loading bay doors could easily go in the floor of the area where the crates are and you can turn the pipework into an overhead gantry for the lifting gear. Lots of industry now uses suction to move objects about, including large crates, so no worries about forklift trucks or pallets (I read this argument recently about crates being in places where crates shouldn't be and it just shows how inexperienced in life some people are -
http://www.ergonomiclifting.com/ )
Also, for the textures, you could manipulate some of the standard textures a bit to give a throbbing effect - look at the 'slip' textures to see a throbbing red colour. I am not saying use it but it gives the idea.
Anyway, just an idea.