Yep, I've noticed all of those things.
You can't check LOS outside the map area, but like I said, it might be a reasonable approximation of reality to just check LOS to the map edge. Especially if in return the aircraft can be fired upon in their approach to the AO, or retaliation against aircraft escaping the AO, instead of appearing and disappearing into thin air, it would be a net gain for accuracy.
Or even just having the AA weapons facing the right direction when the aircraft appear (assuming LOS to the map edge where the aircraft is arriving), would be an improvement.
t = seconds of advanced warning before the aircraft appears on the map edge
t = (detection range - distance to map edge)/aircraft speed
This time would give AA units an opportunity to get their weapons pointing in the right direction, which does appear to have a big impact on how soon they can start firing in-game. Consider also that aircraft are loud and infantry/unbuttoned crews would be paying attention in that direction even if they couldn't see the aircraft.
Also, this reminds me of another issue. Infantry carried SAM launchers (and probably all infantry weapons) turn WAY too slowly. I've seen them be unable to turn fast enough to track an aircraft on even a medium sized map. I'm pretty sure a human being is capable of turning to point a weapon much faster than they are able to in game. Might be an oversight.
< Message edited by Werezak -- 11/30/2018 5:03:20 PM >