Hey together, sometimes I think, that windows can break or better atmosphere in the game: 1. From the mission creator side: Why can I open some windows, and some not? At least from the inner side of a building, every window should be able to be opened. Other solution is, they are locked and the picks don't work. That's at least the illuison that they "could" be opened! The same about doors. It's okay for me, if some doors can't be opened with picks or keys, but the should give the illusion, that the can be opened to intend a "world behind it". I know this can confuse players and lead to wrong paths, but I don't want the feeling, that behind this door the world is over. Also I am a master thief. What's a locked door for me? 2. Sometimes I wish, that behind the glasses of windows, I should see at least a glimse of the things behind it. So just a very little factor of transparency. And if there is nothing behind it, because of level-design, a jpeg of a fictional interiour, along with some noises from the happening behind it (baby screaming, discussions, laughing ...) That would make a better atmosphere in the game, and gives players the feeling, that they are in a "complete" world. Mainly, level designers should avoid doors and windows, that can't be opened because they lead to nothing. I know, it's freetime job and they are not paid for anything, therefore I can understand it. But in my perfect world, it would be like that.