I like it primarily because it reduces accelerator pedal response for smoother, more comfortable takeoff while still allowing wide-open throttle if I need to pass or merge quickly.Never used it. Never will. I like the RL performance just the way it is.
To make vehicles feel more powerful than they really are, manufacturers have taken advantage of electronic throttle control's ability to open the throttle blade more than the relative the position of the accelerator pedal. By aggressively opening the throttle with a minimum of pedal travel, a vehicle can be made to feel more powerful on initial tip-in than it really is. Unfortunately, most of the throttle blade opening occurs early on in pedal travel so when you push the accelerator further, there little additional power available.
Take the HR-V, for example. Around town, its tiny 1.8L engine feels pretty peppy. However, that's an illusion. Honda have mapped the throttle so it opens about 50% with only about 25% accelerator pedal travel. Since you're "giving the car more gas" than you think you are, it feels powerful. If you continue to press the accelerator pedal further, not much happens except more noise as the little engine revs up.