I just want to add; this effect has a slight “shimmer” to it when you see it in person. But it doesn’t move fast enough to be perceptible, especially not when you’re in an aircraft moving at at least a hundred miles an hour (hell, you can’t even see it move when you’re standing still unless you’re looking at a timelapse or standing very still and watching for hours). Nonetheless, it stands out just about as much as it stands out in real life (ever seen a port in Greece?). I would say it doesn’t need to get toned down.
It would be nice if it had more structure to it, yeah. But if you’ve read on the phenomenon, no one really knows EXACTLY what causes it.
As a closer, it adds definition to the sea (rather than having a homogenous sea that looks bland and incredibly dull, almost like a boring patterned blue sea). I don’t want Asobo to take it away.