User blog comment:IamJakuhoRaikoben/Chapter 402: Iron Fist of the Fire Dragon, Review./@comment-1359322-20140929144423/@comment-7418318-20141001081318

"And the OS, instead of being put out by it, might even work harder to acheive the dreams of their fallen leader."

That might work if the leader is someone very close to the troops, like someone they served under for a long time or who earned their trust and undying loyalty.

So far Jellal did nothing for them. All he did so far is keeping them as slaves when they otherwise would have been able to be free (post-ToH Rebellion), sell them off to Brain and then beat them to a bloody pulp right after they escaped from prison. Sure he promised to free them, but he didn't have a chance to pull that off yet.

So what reason would the OS have to be loyal enough to Jellal to carry on his will after his death? The only reasons why they migth follow him now are the promise or fear his power (I doubt this one is it though). Neither will mean anything if he's gone.

As much as I like Meredy, I can't see her taking Jellal's place. She's just not a leader.