Aerobat77
Certainly the most reasoned scenario so far.
All this nonsense about terrorists, robbers or suicide pilots all seem to be based on evidence that is at very best sketchy.
1. "The ACARS/Transponder/Comms were disabled deliberately."
There is no evidence for this and there won't be until the aircraft is found and even then, maybe not.
2. "MH370 flew west at FL295 to avoid other traffic."
This altitude is a guess based on primary radar returns which must allow for a +/- 1000ft error which basically eliminates any supposition based on a '500 ft' level.
3. "The aircraft was skillfully flown from waypoint to waypoint carefully avoiding radar cover".
Again, no evidence for this. Data from a handful of 'pings' and some sketchy radar returns do not show any deliberation in the flightpath either to fly waypoints or to avoid radar. The track shown could just as easily be a random event or even wishful thinking on those trying to 'make the line fit'. Constellations don't really exist in space. They are just human attempts to join up the dots.
A catastrophic failure followed by rapid decompression is still the most likely explanation.