No, that is exactly what I had envisioned originally, and I'm quite surprised that it doesn't exist other than because of the fabrication that would need to happen.
I'm not terribly chuffed with my front lift at the moment, so I am thinking of removing it. The spacer option at the top is easy and cheap, except for the pain-in-the-arse problem of getting the strut out of the knuckle to change or remove it. My knuckles DO NOT play nice with any special spreader and the strut needs to be bashed loose with a sledgehammer wailing on the knuckle. I don't like that at all.
You build that, I'd buy one.
FYI, I've been in constant rain at highway speeds for 3 days now. No problems with the ESP at all. The only time it activated, was when I was on an entrance ramp loop, turning sharply and accelerating, and hit a puddle and slid sideways a little. Stomping on the go-pedal also made the ESP unhappy, because the tires broke loose in the wet.