I'm thinking about another possibility. Let's suppose Game 3 is not chaos only. I'd rather see
Bad guys
- Chaos Dwarves
- Chaos race (but with two Chaos factions, like Khorne, Tzeench, each with its own LL, and LL (and so faction) specific units and maybe building. Like Drycha for the WE. So we would have a common base of units for Chaos Gods, with specific units for each God, but as a single race and not 4 completly different races.
Good guys:
- Kislev
- Cathay
Neutral
- Ogre
I'd imagine 4 of these 5 races as core starting race, the 5th being the first DLC (a la Tomb King).
Why not Kislev as pre order and the other 4 at start?
Because of the teaser. What if the pre order is NOT a race, but a LP? Empire with missing Knightly Orders, a few more icon units, playable Toddy and or two LL? This could be a way to bring the Empire, one of the main factions, to 6 LL.