I don't know if it's possible, but maybe a system like we see in many FPS games, etc: when its matchpoint (one more win for a team to win) or the timer is coming down on last round or something, have a poll come up automatically with some maps on it: 1 for map A, 2 for map b, etc, and then the playerbase who is playing at that moment could decide on what they want as a majority. Would take a week or two to work while everyone who plays on the regular learns the map names, but after that it would smooth out any problems people have with maps since we can assume the majority of the server population are playing a map they want.