Oh, I didn't say you can't desire to have your mission look a certain way. And I can certainly understand the point of view of an FM author who designs a mission "just so". My point is that you have no control over what a player does or doesn't do. Unless of course you convince people not to release custom objects/AI to the public. Regardless of what an author wants their mission to look like, once it's realeased to the public and a player gets it on their computer, like it or not, they can change objects, textures, heck...they can even load your mission into Dromed and change everything to the way they want it.