Why is it important if the a/c was 2.5 or 3 m west of track or directly on track? What difference would that make re the outcome?
Whether it was on track or 10, 20, or even 50 miles either side of track, whatever happened did so regarless of its precise position. Since we do not know the pricise position of any convective activity that may have been present in the area, or if that was a factor in this accident, the exact position is not relevant.
If a ship hits an iceberg in the ocean it doesn't matter whether it hit it on course or off course. The only thing that matters is what happened to the ship after the impact.
This was open ocean. There is no terrain for the aircraft to fly into by being somewhat off course. The information is irrelevant to the cause.
So is all the detailed information with respect to ocean currents and locations of debris. They may be very useful in locating the point of impact and therefore narrowing the search for the recorders or the remains of the aircraft, but in and of themselves they are not useful in determining the cause of the accident.