Piltdown Man : I agree with you here. ICAO won't change Annex 13 for a while to come, no need to look for help in this direction unfortunately.
Look, the vast majority of accidents we see today ( say last 15 years) are not anymore single human failures (e.g. Pilot error) but Organisational errors.( lot or small errors committed by a multitude or people all around )
Society is also changind and expect 100% safe travel, so when something happens someone must be to blame for negligence.
Add to this the culture ( a big factor in the 2 accidents we compared ) that everybody wants to avoid because of political incorrectness, and we are likely to get stuck in the present accident investigations model focussing on Technical issues and pilot errors.
Unlike Colgan, AF447, TK etc.. the crew this time is available, and if properly debrieffed, could help us a lot to change the current approach.