I'm going to sound heartless but would like to state a fact here. From this event, we can see how disproportionate air disasters are treated as compared with other accidents. It is unfortunate that 239 lives were lost in one event but more lives are lost on the roads everyday. The amount of money poured into this incident is astronomical. Frankly speaking, considering how rare this incident is proves that there already are sufficient layers in the aircraft and off-aircraft systems to 'prevent' something closely similar. The reality of it all is that we may not see any changes made after this incident. The cost versus probability just does not work out. It is like the 50-year storm or 100 year earthquake. Do we see huge tsunami walls built along the west coast of thailand? So I wouldn't expect much to change that will result in expensive hardware upgrades or mods. Perhaps only policy reviews and tighten procedures, if ever they find out the loopholes that led to this incident.