Landing on 35 gives greater length with two parallel runways to go for, 05 is shorter. Vehicle access is better to 35 as you can use the parallel runway as a road, 05 is like walking in fog. As to the " cause" probably we will never know, but the 787 is " heavy" and the vortex could well have been a factor. If landing following a Heavy the FAA guidance for ATCs is:
2.8.1 Specific Procedures
2.8.1.1 Landing Behind a Larger Aircraft - Same Runway (Figure 2.8-1)
Stay at or above the larger aircraft’s final approach flightpath.
Note its touchdown point.
Land beyond the touchdown point, run- way length permitting.
If unable to land safely beyond the touch- down point, go around.
The tail wind may have effectively " contained" the vortex on the threshold.
Anyone who flys in Istanbul knows that in a " non normal" you have to paddle your own canoe, ATC will accommodate your requests, not make suggestions.
The engine with fire was still producing thrust and the crew followed the SOPs as far as we can see. In fact, they (ALL inc Cabin) did a good job, looking at a destroyed wing and an engine fire is not a comforting sight..