I'm almost 100% certain that by the end of IBS there will be a new Khan-Ur, changing Charr society for the better. I've seen other people theorize that It'll be Crecia or Rytlock, which I admit both are likely candidates to be the next Khan, but I don't think that'll be the case. Personally I both think and hope that it's going to be Effram Greetsglory, I think he's perfect for the role, he was introduced in Bound by Blood, and believes that the legions should work together instead of fight, he's extremely kind to others but also gets serious when necessary to defend his fellow Charr. With Smodur's death, Effram was given control over the Iron Legion, which means that currently, Effram is the leader of half the legions of the Charr, I think it's only a matter of time before he becomes leader of all four. Plus, on another note, our main enemy this season is Jormag, a being of ice, and who is Effram Greetsglory? A powerful leader of fire, I believe Effram will play an extremely crucial part in taking down Jormag and then will rise to the position of Khan-Ur at the end of the saga.