I was thinking a way on how to make lock picking that little but more interesting, but with any modification it would make it that little bit more harder. Every lock seems to be the same, all across the Wastes. What if there were different kinds of locks, I know this is implied by the hardness of each lock. If we could see that each lock was different, we could use different tools to open them. A small lock could require a small screwdriver, a bigger lock = a bigger screwdriver. So on your travels you need to find different screwdrivers. There are probably reasons why this would be not a good idea, but it just makes scavenging more worth while.