I don't think mods are essentially required to change the random topic into a magickal one. simply any member can start a magick topic there.
Not all of the members are using the chatter for the magickal purpose. Sometimes the chatters don't want to discuss magick. When no magickal topic is going on, they can talk randomly.
However, active members are here to learn about magick and yearn for serious debates. If no one is going to have a serious conversation at that moment, just wait till somebody comes out. Many of the members lurk and wait for a serious topic. Don't waste your energy trying to force someone for a topic. Wait till someone likeminded shows his/herself.