(1) Why are there so few types in "Nearby venues"?
(2) I can easily add points (blue circles) to the map, but I could not find a way to remove individual ones. The only way I know so far is "clear map" in the main menu, which deletes all points previously created. Maybe you could add another button in den points context menu next to "Navigate", "Nearby" and "Share", which might be labeled "Remove".