Hopefully that will come to iOS soon or i may have to ditch the 3 Year old 6Plus for the S9 :-)
I also think that the function should be automated, I stopped 3 times to day to use the skip button. It was extremely annoying continuously being told to turn left or right in order to route back to a missed way-point, when I could see the correct route on the screen in front of me. Some times on busy roads it's difficult to find a place to stop to carry out the skipping, and all the time I have to put up with verbal instructions that are of no practical use. Please Please do something about this as it's obvious from all the other post that it's a globally recognised problem.