Spoiler
If Lucius does indeed die, I'd love to see Batman have to return to his original gear to in order fight the League and Bane. Of course, it's entirely possible that Lucius is working with the League - after all, he designed a lot of Batman's equipment, which is based on everything the League taught him, and so could be readily used by them; he invented the Tumbler, which appears to have has fallen into the hands of the League; he was able to synthesise an antidote to the fear toxin very quickly, implying that he knew about it in advance; he wasn't surprised to learn that the microwave emitter had been stolen and knew exactly what it could do the moment Bruce brought it up; and he was visibly unsettled when he discovered Bruce had taken control of the R&D department before he even learned that Bruce had developed the cell phone-sonar system. He could, perhaps, be working for them without actually realising it. It wouldn't be the first time the League used an "outside contractor" (read: Jonathan Crane) to further their goals. I wouldn't put it past them to set Lucius up; after all, a popular theory on the internet is that Bane break's Gordon's back. That removes one of Batman's allies. Trying to drive Batman away from Lucius would remove another. And if that's true, then I'm anticipating an attack on Alfred.