After hearing that Yamato has a little brother (Takeru). I hope that we get a nice short arc (2 episodes) for Takeru's introduction to the group. My speculation is that he's held captive by Devimon because he knows he's a digidestined, Either Yamato or Tai's group (or the group rejoined) ends up meeting patamon who exclaim that he's looking for someone and he then follows them to find Takeru in a jail. I'll make a big moment for both the reunion of Yamato with Takeru as well as the reunion of Patamon and Takeru. Afterward they could go and fight Devimon to recover Takeru's digivice, which would then digivolve Patamon into Angemon for that epic (I hope it's epic) battle.