Typically me, I still wasn't happy with the deck section, so ended up rebuilding again.
Tweaked a lot of the textures, particularly the glass, and indented the window so the IR logo looks much better now. I suspect they put tinfoil on the inside to reflect an internal light, so I've tried to emulate that. I guess that's it. I need to get back to dirtying down my elevator car and then it's on to the emergency vehicles.
PS I have graded the image now to emulate the old Eastmancolor film stock and grain, along with a slight depth of field blur, so it looks much more 'period'.