"If it were reality, I could pull my plane off the runway and onto the grass of a friendly base and exit with a successful landing.
If the goal is to simulate reality, then the rule change to disallow enemy field landings is fine...but then appropriately change the friendly base landing rules too. "
If I remember correctly, the way bases are built in the terrain editor, this is not possible to do. They would have to change the editor first, then go back and change every base on every map.