Next season pretty much has to be about the rift between Carl and Rick + finding food to maintin a larger population. They picked up all of the people from Woodbury, but only Tyrese, his sister, and that lady they saved are of fighting/scavanging age.
I'm surprised the prison group survived the finale with zero casualties. I figured the only guaranteed characters would be Carl, Rick, and Daryl.
Eventually the zombies have to die out by starvation, right? Milton mentioned they need to eat, and eventually the available people out in the open to eat are going to run out.