Nexti Batman movies villains, and Ras' Al Ghul faith
Ras' Al Ghul closed his eyes and then prepare to die in the train falling after Batman glyde away from the train in that cool manner.
Now, in the Wayne Mansion he stated that he may be immortal and his methods supernatural.We all know in both comic books and cartoon he rejuvenate himself through the Lazarus Pit, so he may have die in the train clash but then his minions will recover his body and put it in the Lazarus Pit, resurrecting him.And he'll be ready for another challenge with the Dark Knight in a 3rd movie.
It maybe the right way to introduce Talia also.
About the other villains, obviously we'll see the Jocker origins and changes in the 2nd movie, and maybe another villain that can really give him a physical challenge, cause the Joker in fist to fist isn't so much a fight for Batman.Maybe someone like King Snake or Deathstroke himself maybe a good choice.