So where will the undead stand after this… I have a thought here to have some consideration, obviously Azeroth would have to be healed by the end of Battle for Azeroth because we only have one Azeroth ;]
Now there could be a whole expansion about this, just saying blizzard,
3 Factions: Alliance, Horde, and Undead (Warcraft RTS roots)
Undead have been banished from the horde for their lack of honor and consideration of life. Clearly the actions of them during BFA are unforgivable and to never be forgotten. As well the alliance are in mutual agreement.
Who would the Undead be?
Faction would be labelled as undead(player base) and the races would be remastered undead of all races that have been resurrected and bent to the banshee’s will, undead Orcs, Taurens, Humans, Elves, Trolls, Gnomes(LOL LEPER GNOMES) and Dwarves.
Classes:
Regular classes would apply to the undead races excluding: paladins, priests, druids and shamans.
Undead would receive a new class called Necromancer in place of priest and death knights would have a healing spec added into them in exchange for Paladins. Val’kyr could probably be worked in as well.
Necromancer character could have endless dark reanimating abilities to rehabilitate their allies to keep them fighting as a priest or druid.
The Wars:
The struggle of life versus death, questions of mortality and your loved ones whom are still alive. As there are irreconcilable differences between undeath and living relations both the Alliance and Horde have declared war on the Undead.
A power struggle between Bolvar Fordragon and Sylvanas. Sylvanas challenges the wills of all potential forsaken to her will, which instigates Fordragon to no longer be dormant as he is fighting a struggle to keep the forsaken from ravaging the lands with Sylvanas.
In regards to the Bolvar versus the Alliance and Horde they are now at war with Bolvar thickening his ranks by reanimating the dead of the Horde and Alliance long gone to bolster his ranks in his fight against Sylvanas(I am sure there are many LOAs that can be worked with from Magni to Bwonsamdi tortured crying for help as they’re being torn apart by Sylvanas and Bolvar). With the aggression of the Horde and Alliance being at war to stop Sylvanas they find themselves locked in battle against Bolvar over clear irreconcilable differences of living vs dead no matter who is their leading lich.
As well this can also build off of the lore from Taelia Fordragon and relationship with her father. The new found lich king who’s only purpose is to protect his living daughter causes him to no longer be dormant, and annihilate who ever gets in the way of his fight against Sylvanas. As he fights for power. Which possibly then leads to Bolvar trying to play god and keep peace in the realm. This also can help mitigate wrath between Bolvar and the Horde etc…
Home Zones:
Darnassus (Capital City), Darkshore, Felwood, Ashenvale, Eastern Plague Lands, Western Plague Lands, Hillsbrad Foothills, and Tirisfal Glades/UC(Capital City)
Zone Reworks vs Expansion Content
The whole game would have to be reconsidered in regards to expansions, possibly even level cap and level scaling in zones.
Gilneas is refortified by the Night Elves and the Worgens as they are consistently combatting their undead enemies to the North, Aszuna and Val’Sharah would be changed to Night Elf Zones and possibly a rebuilt Aszuna as a capital city on the Broken Isles for the night elves finding refuge in Black Rook Hold or with Farondis.
I hope this could be enough to paint a picture.