We are on board with most comments, here. Our cars can definitely benefit from a better valve (TB), better pedal mapping (TC), and a custom tune (calibration). It doesn't have to be one or the other, do all three if you can afford it.
Also, keep mind that many folks still have warranty and don't want to tune yet.
Obviously, GM, or any other make for that matter, cannot please everybody. This is for those who think the stock response is not for them. Nothing wrong with stock response if that is the way you think it should be.
The one thing that is not a matter of opinion, is that throttle response can be measured as mass airflow per degree of valve opening at constant pressure differential, or pressure drop per degree of valve opening at constant flow. There are ways to do it on and off the car. This is just a modulating valve and they all have a response curve depending on its geometry, we changed its geometry and so did the response curve.
Those sensing it responds better and more linear are not making it up, it does so, and it is measurable.
Thanks,