PLEASE get rid of those shiny mirror-finish bits. The box and cylinder-shaped object on the floor near the engine. They look horrible and don't fit in with the rest of the shop. Also the flywheel should look more like a flywheel and not have a mirror finish also.
A poster or two on the walls would be a nice touch: a car, a woman, something like that. Maybe a window or two as well. Of course this is just the engine builder, though I hope the shop will be more shop-like. Have a few tools laying around maybe? =P
Also, right now all the head covers say "Automation" on them. I hope in the future we can choose the colour and what they say "DOHC EFI 2.0" or something of our choosing.