That's pretty nifty.
For Keep on the Borderlands, I rolled up a Wandering Band of Adventurers uniting with the Goblins (which is actually about what happened last time I ran it, if you count the PC's as a wandering party).
For Forge of Fury, I rolled up the Duregar having a conflict with the Trogs. I'm running it this Saturday, so I will include that in my mental notes (but not change the populations, just keep in mind the Duregar and Trogs are at war).