
People log on and see "Rotskale and bone army ravaging the town of Beacons Perch" in the announcements
or
"Mystical White Dragon seen in outer rim of the Jade Sea"
And since your so fond of trinkets and treasures, how about a having the villians drop trophies (maybe a claw..or a head here and there) and have a Guild trophy room in the hall. (you know, a lil place to show off)
And do this often...mix it up a little...have the villians pop up all over the three campaigns. So you have Mr Joe Schmoe who just bought Nightfall...sees the events in the other campaigns...wants to be kept in the loop so he goes out and buys the other ones.