We have areas of the module that are accessible by ropes, but the ropes are provided by the module and there isn't any chance of failing. I would like to suggest a script being created that relies on the climber having a rope in their inventory in order to climb up or down, and a series of DC's to determine if they can successfully climb the rope or not, also with a chance of failing during the climb, failure causes the character to drop and receive some damage as well as be stunned or knocked unconscious for a short time. Lastly there is a percentage that the rope can snap and be destroyed from inventory, stranding the player unless they have additional ropes. An addition of aa rope climbing skill could be included to work with the DC's, combined with strength base modifiers.
It would add some cool flavor to the environment, it would make the rope items sold in the module useful, and would add some more depth to adventuring and dungeon crawling, as well as included stranded story lines in all of our gaming, and lead to rescue storys for other players to share.