I recorded this at half pixels (and realized I didn't want to redo it so just left it) offline around A1 I think same as you.
It won't be done rendering for another 34 minutes on Vimeo, though.
Overall it's not much different from you. The runway maybe loses a little contrast as you get past a certain distance, but it still retains that "grey" color. You just track the grey. You can see it better as it moves. You can tell "the grey is in an X shape -- those are the 2 runays" and line up accordingly. Maybe it's just a matter of having a practiced eye, but I've never had problems figuring out the runay unless it's like the last few seconds of the video I uploaded, where I come in very low.
I don't think stripes, Xs, or white lines are the answer. I would think the best fix is for HiTech to tweak the distances of the Level of Details, and how it renders. Maybe just give it a little more contrast or something, for a longer period of time before it fades into the distant objects. That might achieve what you want. Any actual pixel shapes/colors would be indistinguishable, though. If the runway is hard to see, the texture of the runway would also be hard to see. Therefore, make the runway easier to see, rather than "more decorated" is my suggestion!