Reading through the Emerald Knights campaign has given me an idea for an adventure within Emerald City. The short version is that one or another supervillain -- likely FOE or the Chessmaster -- is going on a recruiting drive. That means a lot of petty and not-so petty crime popping up in Emerald as various supercriminals are given auditions. Ideally this would start with a number of solo or semi-solo threads as individual PCs stop individual groups, then track them back to some common mastermind. At the climax the PCs can come together to face this foe and strike a blow for, uh, peace and justice and apple pie and all that.