ability to list airports in history and delete some
Before SU5 the game actually stored the last visited airports in a list.
Now it seems to have lost this capability.
I could see how this could be a useful feature. Let’s say you visit some place but you know you aren’t coming back in the near future, so you want to delete it. The last few entries are place you want to visit, but aren’t necessarily your favorite airports.
You can do similar things in other Microsoft products like Excel and Word, where you can delete recent documents out of your history.