If you walked into a restaurant and the server didn't know the menu well, you'd be concerned or miffed. If even a good restaurant you liked looked the same now as it did twenty years ago and served nothing new or different, you might be looking for another restaurant.
Study your product and service routinely. See how it can be improved. Check out this related article in Manufactured Home Living News, Professionalism, the KYPs and Manufactured Housing.##