What I found I didn't like about ProPilot when I road tested a 2018 (*) was that the dashboard display didn't provide any feedback about the detection of the lane markings. IIRC, when it detected it could be engaged the fixed lane markings lit up. When active, the lane marking remained lit up and solid. E.g., like this: https://youtu.be/lqSR-Ozy1sU?t=30
I found this rather disconcerting since I'm so used to AutoPiliot (**), where the dashboard display provides continuous feedback on the quality of the lane detection. I tried to find a video that demonstrates this; I think this shows it reasonably well: https://youtu.be/9URpx_PnM3Y?t=75. You can see where the lane marking on one side or the other (or both) goes from white to grey several times, and the dashboard display shows an indication of how the car thinks it's centered in the lane. Note that AutoPilot wasn't engaged at that point in the video; it's not turned on until about 1:25 when the lane markings go to blue (and then goes off again at 1:31 when the markings go back to white). That this video is of an AP1 car with MobileEye's tech, which I believe is the same tech underlying ProPilot.
(for both videos, I'm totally ignoring the audio; I just wanted an example of how the dash display looks).
(*) 10 total minutes of time with ProPilot turned on, so take anything I write as nothing more than a casual observation from my personal experience
(**) over 15K+ miles with AutoPilot turned on