List of mods that replace individual factions:

Azyl - A mod that replaces the Order faction with Azyl.
Conflux - A mod that replaces the Inferno faction with Conflux.
ConfluxRus - A mod that replaces the Inferno faction with Conflux, author's translation with extras.
Oblivion - A mod that replaces the Inferno faction with Oblivion.
Damned - A mod that replaces the Necropolis faction with Damned.
Sanctuary - A mod that replaces the Forest Union faction with Sanctuary.
Nexus - A mod that replaces the Shadow League faction with Nexus.
New Academy - A mod that replaces the Academy faction with "New Academy".
Citadel - A mod that replaces the Northern Clans faction with Citadel.
Wintrial - A mod that replaces the Northern Clans faction with Wintrial.
Church - A mod that replaces the Stronghold faction with Church.
Cytadela - A mod that replaces the Stronghold faction with Cytadela.

Check out the reviews:
Review of the Azyl faction from "Heroes for fan"
Review of the Conflux faction from "Heroes for fan"
Review of the Oblivion faction from "Heroes for fan"
Review of the Damned faction from "Heroes for fan"
Review of the Sanctuary faction from "Heroes for fan"
Review of the Nexus faction from "Heroes for fan"
Review of the New Academy faction from "Heroes for fan"
Review of the Citadel faction from "Heroes for fan"
Review of the Wintrial faction from "Heroes for fan"
Review of the Church faction from "Heroes for fan"
Review of the Cytadela faction from "Heroes for fan"

Big request to those who upload mods: please add screenshots, provide direct links and indicate which faction the city replaces.

I noticed an error in the Sanctuary mod: Kirins are bought for gold with crystals, while the town's warehouse provides gems.