Considering just how much flying comes up in games, a way to add flying vision to character tokens would make the life of those running the games a lot easier. A simple way to do this is, alongside the new one way and transparent modifiers on objects in the lighting layer, also let us assign a number to the wall or object to represent its height. In a similar way, let us assign a number to the player token to represent the height they are flying at. If the token's number is the same or higher than the lighting objects token, the lighting object will not block vision for that player. In my experience, the issue of flying comes into pretty much every session, and not being able to see over buildings or past walls while flying at a high altitude is kinda immersion breaking and difficult for GMs to work around.