On the question of briefings for passengers might I add this - most airlines produce inflight magazines which are full of inconsequential rubbish. Why not oblige them to put in further safety information for passengers (procedures in the event of... and details on oxygen airflow indicators, non-inflation of bags, low flow rate, duration of flow etc) which the cabin crew can refer to at the end of the pre-flight safety briefing.
Firstly if the passengers paid the slightest attention to the briefing they would have known that the mask has to be pulled towards you to start the flow of oxygen. Secondly, they would have known that they should secure there own mask before helping anyone around them. Thirdly, if they don't listen to the briefing what makes you think they will read the magazine? and finally, LIMPass now that you have experience of an incident perhaps you will encourage your fellow travellers to pay attention when the CC are doing the safety demo.
In a week where 153 died in Madrid in an air crash, the application of correct procedures and the recovery without incident have been overshadowed by the disproportionate outpourings of expert self publicists.