Just sayin'. This would add to the argument that to mix a higher-gain take in with the lower-gain ones might be a better way to go.
This is a really fun idea. I like two tracks of super-tight Jon Schaffer (gee, have I mentioned Iced Earth yet in this thread? :P) and then two tracks of something huge, saturated, and chorusey like "Bark At The Moon" in the background.