VAPilot 2004,
Aviation safety has moved on a lot since the 70's, while it's understandable to have teething problems when introducing new technology, both the carriers and their passengers did not sign up to become Beta testers.
Boeing's solution wouldn't have been acceptable in 1960 let alone 2013, the more you read the report the worse it gets.
Boeing didn't design the plane to have a battery fire in flight, I'm also damn certain that their calculations are way off on the battery swap frequency, if there's a problem with the battery, resolve the problem so it doesn't occur.
Putting the damn thing in it's own incinerator case and touting this as a workable solution is a triumph of the bean-counters over Boeing's illustrious heritage.