Purely out of curiosity (and because RP standards is the main point you have here), what mechanics/scripts are currently in the server that you feel criminals are overlooking in favour of dealing with these NPCs? Guns currently have a solid import and distribution system with some fairly decent RP involved so we can ignore that.
If I rob a house, I receive packed cash and scratched furniture, where do I sell these assets without using the NPCs?
If I rob a store/bank, I receive packed cash, what can I do to make money off this without NPCs?
If I chop cars, I get a load of scrap car parts, what way do I make money from these by interacting with other members in the server?
If you are going to downvote a suggestion, at least provide some context or evidence as to why you think that, instead of some very vague rambling about RP standards which aren't even built into the server.
P.S. for the sake of the thread, I'd like to add a +1 for the OP.