I use the standalone of MMM's Increased Spawns, Not Alone in the Wasteland and MTC Wasteland Travelers. I like mods like these the most because it brings back the encounter dynamic of previous fallouts and updates it to the FPS environment in Fallout 3. I tried Attentater's Wasteland Economy but there were a couple aspects of it I didn't like or thought was unnecessary.
However, there are still enormous swaths of the game that are deserted even with these mods active. I was wondering if anyone knew any other population mods besides the ones I listed. I would also be interested in knowing if anyone ever considered making a mod with Regulator/Talon/BoS/raider patrols throughout the wasteland that travel back and forth on set routes (kind of like the MTC travelers), not just hanging around their usual ambush sites.
Thanks for all that the modding community does for Fallout 3.