Would it be possible to make a mod that allows undead races from other mods to be recruited in conquest of Skyrim and replace the beasts, dwarfen troops and mages with undead you have unlocked and turns the residents of citys to undead after it is conquered
The undead would be unlocked and improved the your lair
After clearing Bleak Falls barrow you can cast a spell in the last room that resurrect the draugr as your servants and get workbenches in each part
Bleak Falls Temple:
create new sections
Crypts: unlocks a spell that sends corporeal undead you have created to the crypts they wait here till summoned
can be expanded to increase the max ammount of corporeal undead you can have
Temple: the crypt for incorporeal
Hoard: the crypt for beasts
Hall of Necromancy:
build living rooms to get more apprentices
improve the halls so the learn faster
Laboratory
here you can use corpses and ingridients to get new minions and improve them
upgrade it to unlock new experiments
unlocking them need dissections from practical necromancy
Bleak Falls Sanctum: besides some funiture you can build
a forge where you can craft powerfull artifacts or scrolls that when used turn the weapon/Armor you have equiped into one you need to have x harvested souls (practical necromancy)
a Altar where you can perform rituals that empower you or your undead army (again souls)
a servant that can be orderd to prepare your plans (start quests to recruit apprentices, search artifacts that are used in the forge and necromantic texts