According to
Arrow executive producer Marc Guggenheim, Matt Nable's Ra's Al Ghul will completely change the landscape of the show.
"What's really cool about Ra's coming to the fore is [that] his presence changes the show. Literally, the show will not be the same after [S03E09-The Climb]." There's much more from Guggenheim in the video above. He also crypticaly teases that the motivation for Ra's actions share a similarity with Malcolm Merlyn's (John Barrowman) reasoning behind wanting to sink The Glades - apparently both Malcolm and Ra's are motivated by death. Fans of
Batman Begins will recall that Christopher Nolan's take on Ra's also had the character motivated by death. Perhaps Arrow is borrowing from that particular film's playbook again?
Also touched on in the interview is the news that John Barrowman will have a larger impact once the show returns from mid-season hiatus in 2015. This comes on the heels of Barrowman teasing what looks to be a fitting for a mask so perhaps he'll be donning a new costume in reaction to his excommunicated from the
League of Assassins?