I assume the Lor'themar and Jaina thing is on a loss condition.
It'd be a waste to have built Jaina up just to kill her off in a raid. She's a character with a bit of conflict now, the story is more tense when she's involved. Prejudiced by both Theramore and the Divine Bell incident, she's a bit of a loose cannon now... or at least has the potential to be. Kalecgos and Varian can't always be there to talk her down. Never sure if she's going to go too far; makes her interesting.
Lor'themar, too, but for the opposite reason. Pushed even further into leadership of his people and has a torn allegiance from the horde. Assuming they don't just drop him, he has the opportunity to be a big player in the new horde.
Yup, having death sounds for one might have implied something - but both of them having death sound files is too much, especially since one of Jaina's makes it sound like Wryn is dead - probably just failure conditions for the inevitable scenarios.
@ Jaina and Lor'themar sound files. Seeing a few posts about Jaina dieing, listen to Lor' he talks of blood... I bet at some point alliance fight with Jaina and Horde with Lor' and the sound files are just part of the quest/scenario failure speech. I dont see either of them dieing lore wise.
Garrosh's final words.... They moved me so. His VA put all his passion into those lines. It make me harken back to when we first met him as a sad, broken, orc living beneath the shadow of his father's failures back in Nagrand.