[Purulent Carcass]

No, I disagree. Let them through the doorway, plugging the door does nothing unless there are actually 1000 enemies on the other side. As it stands, the NPCs normally open the door themselves, invis rogue or not. A party shouldn't have to stand there before each battle going over tactics, this should all be second nature.

Being flexible is true. These are not concrete rules but a guideline to go by. So lag and all of the wierd things that happen to us, from being stunned to being held in place by webs, is considered when the battlefield is in motion.