What I did not understand (from early on) and still do not understand is what appears to be a 'single' line of reasoning and search.
A number of alternative approaches and scenario's have been proposed. At least one of those scenario's suggested a very limited search area and was presented to the ATSB and Malaysian investigations. An area in the southern Indian Ocean proposed at a time when the official search was still combing the Andaman to Perth route. As far as I know that limited scenario is still possible with the old and new drift analysis and the various confirmed finds.
Why a search for 2 years over a huge area without even talking about or checking such relatively easy check&reject alternatives.
These Fugro guys and others on board have been operating in pretty risky environment for a long time. I only have admiration for them.