You will, as time progresses, be able to look at a pilot landing to pick you up from base and decide whether or not the pilot is going to be able to get you to your destination safely, and certain names will stick out in your mind as "do not fly" and "highly skilled" (everyone in between being "normal levels of skilled, and intelligent decision makers").
Having a formal list (even just hosting it) kind of puts AW in a position of responsibility for the quality of pilots as well and that's an additional burden on the (unpaid) staff's time. The current system lets actively bad pilots be dealt with as and when they appear.
