I have the sports coilover kit + camber arms plus rear Tow-in arms plus traction and trailing arms. I do not notice nor did I measure increased noise. When I measured noise on the highway at 75 I got the exact same value on the exact same stretch of road. I do notice however a vast Improvement in steering feel, transient response, and ability to handle very high lateral acceleration without drama or some of the previous twitchiness, particularly coming from the rear. I would describe it as a transformation in Dynamics without any increase in noise vibration or harshness and actually a somewhat better controlled albeit significantly firmer ride, without any of the pitching or pogoing that the car sometime showed in challenging circumstances and with significantly reduced body roll and brake and acceleration dive and squat also.
I can't say that I notice any increase vibrational harshness either. I do not have the MPP front upper control arm however. Do you have any actual data supporting your assertion? Or are you just talking about some subjective personal impression? As you know those are totally vulnerable to confirmation bias.
And while we're on the subject of the stock OEM suspension, while we all are aware of some of its limitations I think for a stock suspension it struck a pretty good balance between ride and handling. Most of us on this thread would probably have wanted the balance pitched to better handling perhaps at some sacrifice in ride but the car was not exactly terrible handling to begin with. And for a car with 35 series tires and basically one inch of sidewall and very heavy cast OEM wheels, I have to say that the ride in the stock suspension was pretty good too.