D.C NPCs

Fallout 3 has a good amount of reactivity, mostly seen through random encounters. Despite this, certain locations and groups could use some more. Why don't the Outcasts expand beyond their fort, despite being a well-armed group trying to get in contact with the western Brotherhood? Shouldn't there be a few less Super Mutants around upon completing the main quest?

D. C NPCs aims to expand where the base game and Broken Steel didn't go far enough, as well as addressing a few inconsistencies like Aqua Pura never being delivered to some Brotherhood outposts and Fort Independence lacking the Outcast equivalent of Scribes, Specialists.

For a more complete list of what the mod adds, refer to the Compendium in Files.

Brotherhood of Steel

A Brotherhood soldier has been placed outside Arlington Library.

Recovering the Virgo II dish for Three Dogs and clearing out the bunker between the Museum of Technology and the Washington Monument will cause the Brotherhood to reconquer the area after 2 days (can be done even after the main quest).

Upon speaking to Rothchild after escorting Dr. Li  at the Citadel, the Brotherhood will get rid of the raiders and set up a small outpost at F. Key bridge. Assuming they aren't killed, they will relocate to the ruins of the Citadel should it be nuked at the end of Broken Steel.

Clearing the unmarked raider camp near the Flooded Metro will turn it into a Brotherhood checkpoint after 2 days.

If the player kills the Talon guys at the unmarked outpost near Arlington Library, the Brotherhood will occupy it after 2 day. If this is done before Broken Steel, the vanilla Talon ambush with a dead brahmin won't occur.

If the raiders inside Alexandria Arms are dealt with, the Brotherhood will occupy the place. This will happen regardless at the end of the main quest, and Aqua Pura will also appear inside.

Scribe Vallincourt and Paladin Tristan now exist before Broken Steel. They can be found around the Citadel.

After the events at the Purifier:

The entrance of the Citadel will no longer be left unguarded. For some reason, everyone guarding it is disabled in vanilla.

A couple extra Brotherhood guards will be around Project Purity.

Several supermutant in Pennsylvania Avenue will be disabled and a couple Brotherhood soldiers patrolling will appear.

The Super Mutants found on the way to Rivet City and near the Irradiated Metro will also be disabled, and some Brotherhood soldiers will patrol these locations.

MDPL Mass Relay Station will become a Brotherhood outpost, and Aqua Pura crates/barrels will appear ar