The current naming convention can be found here. There are currently three exceptions (four, if you count Seattle, but that move was done improperly and without regard for a true democratic process, as you are trying to do with Boston and New Orleans). The proper way is to make a request at requested moves, based on what the naming conventions guideline states. Also, since this is a very hotly debated topic, it would be good to seek a broader consensus, such as at WP:CITIES or even at the community portal message board.