The markings on the runway is lacking in infinite flight. The arrows at the displaced threshold and the blast pad is missing in infinite flight. It is just a grey rectangle at this moment.
Credit: FAA
These little details can definitely increase the realism of infinite flight and I would love to see it coming.
Blast pad
Blast pad is the part marked by the yellow chevrons. It may be construted at the two end of the runway and protects the ground from the erosion by the jet blast.
Displaced threshold
Displaced threshold is the part located right behind the threshold with the white arrows on it. It can be used during taxi and take off roll but not for landing.