at some point they better get more aircraft structure to replicate the overall damage, fire propagation, etc.
True, but that could apply to almost any part of the airplane, regardless of what started it? I would have hoped that kind of thing was done already, though someone may be wanting to revisit their ideas in the light of what they've seen in this incident!
Hmmmm....Sorry "in the light of" might be an unfortunate phrase to use in the circumstances......