I'm concerned about the FDR and CVR. They might never be found and recovered. Finding the plane, assuming it crashed at sea, is one thing. Finding out why it crashed is another, unless its debris 'tells' a clear story about how events unfolded.

Isn't it time the NTSB became more proactive and reigned in Malay authorities? Can they take the reigns, legally speaking?

I do not wish to speculate. But I am leaning towards what happened not being a malicious act, but rather an array of events no other aircraft had encountered before in previous accidents.