I am confident, perhaps naively, that the 787 will eventually be a huge success, however things like this will be major hurdles. Lithium batteries are a known problem and if they can't get this right, the alternatives will be a compromise.
Some times the laws of physics can only be pushed so far.
I bet the A350 boys and girls are ensuring they don't get caught this way.
I will be sticking to old technology 777 and dino-747 for the foreseeable future
