Halcro,
I have thought of the same thing before but JVC made their integrated turntables rather hard to do that because the circuit boards are laid out all over the place and wires are like spaghetti. After some research I believe the QL-A75 is the closest to what you are talking about. It's probably the simplest construction as the top plate or chassis contains all the controls and the circuit boards are all under the top plate so making plinth cut out a lot easier. I never owned one but I have similar QL-Y55F with the electronic tonearm but the main board took up the whole width of the plinth underneath. The QL-A75 is almost top of the line and I am sure it's a great performer even with its stock tonearm, which is an old school mechanical one so that's good.
Here are some pictures from a Japanese website:
http://blogs.yahoo.co.jp/gt2500jzz/34155439.html
The QL-A75 is rather hard to find though. And the A-95 is even harder!
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Another approach is to make an armpod or island for a tonearm, preferably 12", that can just swing over to whatever table you will be using. Of course, you have to remove whatever compliant footers so it wouldn't affect VTA or geometry. Pretty much the same concept as your "nude" approach. This way, you are not affecting the resale value of your stock table. Just another thought.
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