You have answered your own question as to why it takes 12 months Keg. The 21st century requires process, legal certainty and less people to do more work! In the days of BASI there were fewer aircraft, internationals only went to capital city airports, reports were a lot thinner than they are now and the people running the place had operational experience. Unfortunately what we are left with now is an extended time frame for completion and the opportunity to learn the lessons from an incident has long since disappeared.