I started to label some areas of a map with text to provide easy to find DC's and attack values for traps on the GM Info Overlay, but when I enabled the dynamic lighting and/or fog of war, it made it very difficult to read the text I had just placed. Ideally, text would be on its own layer and hidden tokens on another (since we do need some way to tell when a token is visible to players and when it is not). Alternatively, all tokens could remain on the token layer and we could add a right click menu option to hide the token. This would make it easier to use monsters with invisibility or stealth abilities, since we wouldn't have to switch back and forth between the layers.