It doesn't show how thin it is though... Personally I recon you could get the socket about 5mm raised and just by upping the voltage a bit you can negate the additional resistance.
Though you don't get anywhere without trying it.
I don't have the capabilities but maybe you could see HOW high you can move it off the socket whilst still retaining stability.
Using a non-conductive fluid you could make a hollow riser and cool all the pins as well as the back side (though making the pins would be a pain).
Whatever you do choose it is going to be a toss up between making the CPU colder for OCing and the rising stability issues involved.