User blog comment:B214/Volume 22 spoilers/@comment-78.8.100.126-20161010164208/@comment-9595671-20161010221216

We might finally see Georg and Leo come back from Hades' realm too, if not for his team... maybe they may come back because of Malebranch? Since they've been there for a while, maybe they started noticing signs that showed they escaped and would eventually cause someting.

And I agree, Jeanne and Heracles could be on Cao Cao's team since Vali's team is mostly of the Vali Team members. Considering the revelation Cao Cao had since his defeat in Volume 12, he might have had a talk with them since we know they were taken into custody. Perhaps his time helping the DxD team could have acted as a pardon for him and his fellow teammates.