Oh yes, and lockpicking is very interesting too of course
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though that would be a lot trickier to implement I bet.... to avoid pure griefing.
Maybe make it very hard so that if you want to pick a 100 QL lock you would at least need 100 QL picklocks and 100 lockpicking skill for a 50% succes chance. And/or make it so you are a criminal until you die (so anyone is allowed to kill you without alignment loss), when somebody sees you lockpicking/stealing something that doesn't belong to you.