Regarding Maps Without Doors

I have been struggling with artistic overload recently so my next couple of posts will be specifically about maps and tiles respectively. So.... maps, (the pre-designed ones by Paizo and WotC). Dungeon maps have a reuse-ability problem... sort of. If it's a map that you have used before, the players will know where the doors are, the layout, and if it is printed on the map then they will know