This is a Major Faction that I wish Endless Legend has in the future. I hope the community can help develop this Faction and Amplitude decide to add it (like the Cultists).

Idea

Now, The Reanimated would be based on sacrifice and raising skeletons (hence the name). They would have unique technologies such as the "Altar of Sacrifice". Which is needed to produce most of their units. The Reanimated would have a lot more food gain than other Major Factions as 2 out of 3 of their military units are made by sacrificing population. 

The main victory type of The Reanimated is yet to be decided.

Units

Units of The Reanimated would be necrotic minions called from beyond the grave. The starting unit is a cavalry unit called "Skeletal Rider" and would be made like normal faction units in the game. However, the unit researched in era 1: "Lich" would be summoned by sacrificing 1 population after researching the "Altar of Sacrifice" research. The Lich is a support unit that can heal allies and send shivering bolts of frost at enemies. Finally, the unit researched in era 2, would be a "Bone Colossus". This unit is a large creature that is "solitary" (cannot join armies) and is summoned by sacrificing 2 population after researching the "Altar Of Sacrifice" research.

Heroes of The Reanimated (both starting and purchasable) are meant to lead their armies but can be used in cities to produce more food.

Quest-line

The Reanimated's quest-line would be about gathering intel on their long lost necromancers who first brought them to Auriga. Following the quest-line awards a new hero and also a few units.

Cons?

However, The Reanimated cannot Parley or Bribe minor factions and must attack their villages. The Reanimated have less health than most units due to the "Lich" unit's healing ability. Finally, The Reanimated units are (extremely) strong on the attack front but, due to the sacrifice needed, will take a while to conjure up a large army.

Cities

Cities of this Major Faction would be: A large cathedral looking building for the city centre; graveyards and run down houses around the city and last but not least a thin layer of fog draped over the floor.

Thank You

Of course, this isn't all that the faction can do but, so far, this is what I have came up with. Hopefully the community and Amplitude Studios can shape it into an amazing Major Faction for us all!. 

This was my idea of the Major Faction of The Reanimated. I hope the community can expand on my ideas and add their own as well as create art for the units and cities.

Thank you, Matthew.

Good idea.

Just mod it now.  :p

The "sacrifice population in order to build units" mechanic sounds awesome, I love it!

Also, the Necromancer / Lich theme, similar to the HOMM6 style, would be great IMO:

As Jojo mentioned, if you want this faction in the game, you should endeavor to mod it in.

We add community factions once per game, traditionally the 8th faction is the one to be co-created with the community.

In and of itself, I like your concept, but I think the flavor of the faction makes it a bit too close to your "bread & butter undead faction", when we like to mix things up to keep them interesting.