Has anyone considered that Josh Pence isn't playing a young Liam Neeson, but rather, Josh Pence is playing a young Ra's Al Ghul, and "Ra's Al Ghul" is a name given to the League of Shadows' new leader? Example, Obama, Bush, Clinton all with the title "President."
In other words, Josh Pence isn't playing the LIAM NEESON RA'S AL GHUL... he's playing a singular Ra's Al Ghul who was the leader of his own time... and if he's being spotted on set in India with Christian Bale, how could Josh Pence and Christian Bale be on set together WITHOUT a Lazarus Pit?
Just saying... it can't be both. It's either one or the other. Either we have a Lazarus Pit, or we have Josh Pence as the NEW Ra's after Neeson's Ra's was killed.