He goes on to say: "There is a lot going on, with various sub-plots for the characters to get mixed up in, some of which will reward them with useful information. Fortunately, DL12 does not have the complexity of DL10, though the DM still has a lot to keep track of."
He further explains: "There are numerous plot threads for the characters to become involved in, some of which will provide them with helpful insights. Fortunately, DL12 is not as intricate as DL10, and the DM still needs to keep tabs on many things."