this one can be realy annoying. i noticed that missile dreadnoughts sometimes remain unspotted while they "snipe" my anti DN DN from point blanc.
as they move backward as fast as their counters forward, its realy annoying to have the target lost all the time, it then gaining a few inches again, just to dissapear again once i can shoot it.
generally im not sure if the whole line if sight system is working as intended. very often whole armies stay hidden while they are rather close and go in full guns blazing. i think this can be extremely frustrating and feel quite unfair at times.