I've played Block Wars since it was released on Cubecraft and noticed maps I liked and disliked. I suggest that an option could pop up after the first game you play on that map asking if you strongly like it, plain old like it, dislike it, or strongly dislike. Now you're asking yourself why would we do that well, A. You could track it and see what maps are disliked the most and remove or change them, B. Have builders build more maps similar to the strongly liked ones, or C. Users quick-join into maps that they like and strongly like, and are rarely put into maps that they don't like.