There's a member of the "old" CEG that had made some good posts about this. He reused he A/C switch from some other car, and with a relay he now has manual control of the A/C.
His name was "edorfox", I don't know if he registered here again.
You're right on that one, who the hell decided I'd never want to have the A/C only on my feet? Or run the defroster without having the f0cking compressor cycling on?
Bad design..