To start this isn't a thread arguing that we are going to get Chaos Divided, we are probably going to get Daemons as a single faction,this also isn't about which LLs we will get or the rosters as there have been many good threads on this already. This thread is more to try to articulate (my opinion) on how it would work and why - done well - it could do justice to chaos as well as provide a great campaign experience for game 3, and also gather interesting ideas and speculation on how it might work. Wall of text incoming!
In my opinion the best way to do it would be to start with 2 God factions (Khorne and Slaanesh would be my guesses atm) as Cores for game 3, with the other 2 as DLC. Down the line there Belekor could be added as a FLC that has access to all (owned) Daemons, but more on that later. These would contain God specific warriors, Daemons, monsters (beasts of Nurgle, Slaughterbrute etc) and Marked Beastmen (pestigors etc). There will obviously be similarities, especially between warriors, across the factions but campaign mechanics as well as the different roles of the marked warriors should differentiate enough to provide unique experiences across Gods.
Khorne: This will be the "vanilla" kill everything experience, with massive favour income for winning battles which will form the backbone of the economy more than raiding or even sacking/razing. You will really need to keep fighting and keep winning, which may make for a very easy "easy" campaign but on harder difficulties will force you to pick battles and keep pressure on to fight. But you will have the most killy roster known to man, and early victories will give you the clout you need to get the job done!
Nurgle: All about the plagues. CA could refine the existing plague mechanics - and perhaps add epidemics as random occurences. Nurgle can spread plagues and his factions will gain favour for spreading them, as well as the general level of disease in the world (including Skaven plagues and random outbreaks). Nurgle factions will be weak in healthy times and access to daemons may be limited but when disease spreads all Nurgle factions can become terrifyingly powerful! Nurgle will be characterised by the tankiest roster in the game, but also the slowest and will lack the killing-power of Khorne.
Slaanesh: Slaking the Dark Prince's thirst is what this campaign is about. I imagine a "cult" mechanic, where agents can infiltrate cities to foster cults which can grow and provide you with favour, and at high levels may start to increase the factions opinion of you, meaning you can create "farm states" which you will want to protect in order to maintain your income. Different races have differing potential for income with elves yielding most (perhaps the cult of pleasure could be allied with and provide money in a similar way to trade if in alliance) and some that cannot give income or cults at all (LM, Dwarfs, Greenskins). Slaanesh will be armed with the fastest roster in the game, but quite glass cannonish with high damage but lower armour than his/her brother's factions.
Tzeentzch: This one I am more at a loss at, I thought about an influence mechanic and income based on amount of wars being waged across the world to represent world instability and change but am not sure if that would work, influence or something like it may be a good idea though. I probs know least about unique aspects of Tzeenttzch marks stuff but a more ranged focussed Chaos faction with lots of magic damage dealers and abilities that boost magic reserve and regen (like Hierotitan does) may be how it is implemented. Certainly open to suggestions with this god though!
Daemons Undivided: Led by Balekor this faction will only have access to daemons (maybe some marauders too just to provide cheap units early on). You will begin with access to basic daemons and will gain higher tier ones by crushing the god's factions to prove your greater worthiness to lead! This faction will be available for free to game 3 owners but to access Nurgle and Tzeentzch daemons you would need to own their factions, so this FLC may be released a bit later on when at least 1 of the Chaos campaign packs has been released. It may be a bit tricky to make unique from the others and will likely only have 1 LL but a Daemon horde would likely be good fun anyway.
The Old Factions
This method of implementation will give CA a lot of room to spice up the old Chaos factions too.
Warriors of Chaos: WoC will gain access to marked warriors, but not without work! This could be done in the same way as DoC, by smashing god factions into submission, or alternatively by smashing the god's rivals! Win Khornes favour by destroying a Tzeentzch faction for example. This will also unlock the path to Daemonhood for your Lords, gained Nurgles favour? Upgrade your Lord down Nurgle's path and have an army led by a Daemon prince of Nurgle (would have to be a high level lord though). The addition of Marked Warriors, Daemon princes and some of the "mortal equivalent" Daemon units like Skullcrushers would give this faction the flavour it needs! And will make it one of the most versatile races in the game.
Beastmen: Addition of a lesser version of the above, where you can unlock God specific gors like Pestigors would be interesting, though new unique units would be best!
This approach has its problems, a lot of overlap for example as CA may not want to have old factions given the toys of the new ones - even to a limited degree, though the prevailance of Giants speaks to the contrary
. But for me this is the dream scenario for Chaos and I think would provide a better, and more ambitious, experience for game 3 as well as a foundation to massively improve the Old World Chaos factions for the final chapter of the trilogy.
Do people think that this would be a fun way for Chaos to be implemented in game 3? Are there any better ideas for god implementation (especially for Tzeentzch, I struggled a bit with that one)?