Where is MH370?
Start with a circle centered on KUL and radius A/C endurance.
Now eliminate areas covered by other states civil radar if they confirm no radar trace.
Do the same for other states military radar.
Ask neighbouring states for any reports of A/C wreckage reports on land. This is not a sparsely populated area.
Continue in this vein until most likely area for search established.
An empirical method like this is more likely to produce a result than grasping at straws of 'possible turns' or 'fire in the sky' reports.
At the moment it seems the Malaysian authorities are jumping to solutions and that's never a good thing to do.