I find the final satellite "ping" location to be very intriguing, but mysterious. If the red lines are an indication of the plane's approx. location during that final ping, it either must've been flying over land for many hours prior, or over the Indean Ocean the entire flight. The northern red line is very far inland, so if it is there, eyes might have been purposely looking away from radar.
Not knowing how accurate these ping indicators are, how likely is it that the plane landed in a country like Iran, Saudi Arabia, or even Pakistan, which are no where near the red lines?
I don't know the technological capabilities of countries like Burma and Bangladesh, or if they have sufficient military radar coverage. Could the plane have traversed those air spaces without knowledge? Just curious.