I absolutely hate only being able to see about 1800 meters in front of me. I would like the option to preload the terrains.
Look at DCS for example. It has a pre load distance of 150,000 meters.
While ArmA's visuals are a lot better than DCS's this is still very possible to do. With the addition of jets coming in it will be very nice to be able to see the ground underneath you when you are flying at 2,000 meters or higher.