I really don't understand all the bitc+++g. If you are unhappy with the noise levels, add some insulation to the dog house. If you are unhappy because it kicks down too easy, learn to shut it off on hills and just use the gas pedal at a moderate setting a so it kicks down at a slower speed.
I've learned to put my foot on the throttle to over ride the CC when going down hill to pick up some speed. I will also kick it out of O/D a little early when climbing a hill to ease the shift and maintain the desired speed.
In any event, the CC on my old F53, pulling a 5000 lb toad, works as good as I can expect.