I'd be curious to hear of anyone's experience that tries this, because it would also take care of a potential issue I occasionally wonder about, which is how much hotter the leads may be getting than the wick covered coil. The 40 is looking at the average temp, so the leads could get substantially hotter than the much larger mass coil without affecting the average temp very much at all.
I thought about that when Kiwi was having problems with hot legs on his first attempts at compressed coils.