I really hope we get a Rachel chapter and her playable in raid mode
This would be awesome, especially since Rachel was originally intended to be in Raid mode through video clips from Capcom, and was rumored to have a small story segment in Campaign mode before the final build of the game was released.
When facing a zombie apocalypse, don't join up with a group. Why? Because you'll end up blowing your own head off due to all the pointless drama caused within.