While I think the import-export drug function is fine i think it add a bit more spice to the game if you could make drugs yourself as well so here's some ideas
easy one: meth production, get a stove some pots and pan and ingredients, boom easy meth lab, maybe you can make a convince store NPC to get the ingredients from him, since most ingredients for meth you can just buy at a drug store, maybe the cops can arrest you on suspicion if your carrying to much epinephrine pills (the main component to non-P2P meth) maybe you can add a quality meth like you did with weed based on things like time you let it cook, how well you extracted the epinephrine from the pills, things like that.
thanks for the time!
