Wooden racks in my opinion also should be completely assembled and then shipped.
I had built a wooden rack using threaded screws and nails some years back but that was not very good in terms of sound. The next step was the wooden rack that I am using now which doesn't use any screws or nails. It is almost as sturdy as keeping equipment directly on cement floor and gives good sound quality especially with my turntable on the top shelf.
(I'll email the design details to magma for his opinion which I am sure will help improve the design both sonically and in looks)
I even tried various paints and polishes and found the age-old spirit based polish the best. It is not very long lasting but as per the opinion of a person whom I trust, it is the most non-resonating protection available for wood (now this is where I usually get accused of magic or snake oil).
Another good option that I had seen while searching on internet was of wooden racks where each shelf was on spikes. This can be shipped and assembled at location.
See this link -
http://www.audioaffair.co.uk/images/uploads/big/HFRKPOD4.jpg