The inside jokes are spectacular (Ran's hair, the spectacular amount of people who commit crimes around Conan's neighborhood, and what even is the technology-level of society right now anyway—I mean, I swear everyone used landlines only four months ago, when did we get smartphones?), I'm not even sure if I caught them all.
If Gosho actually wrote any of this, I give him full points for tasteful self-deprecating humour.