Illuminati defeated. Now what?

[Embassy of Time]

I'm finishing off the first round of campaign notes for a camaign to be run by some teens (friend's kids and their friends). Although it's meant to last a long time, I am including a quick chapter on how to handle defeating the final boss of the entire massive conspiracy that they will be dealing with. The thing is.... what then? Just end the campaign, roll credits, jolly good job, chaps? Or is there something else to be done??

What would any of you do when the heroes finally meet the One Behind It All, and subsequently defeat him/her/it/them/xhug?