Well hacking a bank doesn't give legal value to your transfer order, a simple employee could revert by calling the target bank on the phone under threat of purs

Well hacking a bank doesn't give legal value to your transfer order, a simple employee could revert by calling the target bank on the phone under threat of pursuit if no reversal. Bank account are not protected by cryptography, they're protected by law. What you want is bitcoin to have the same, not say that since a banks' https website could be hacked, let's do nothing about the main weakness of crypto. But anyway the point is moot: it's certain developers would upgrade the network with time as new events unfold.