The Conjuring universe is uniquely-suited for the cinematic universe treatment.
Just think about it; if you have seen either of the main Conjuring movies, then you likely know just how deep the Warren family’s archive runs.
After all, with Ed and Lorraine Warren anchoring the entire universe, there are all sorts of different directions and avenues to explore on a horror timeline.
James Wan and his team recognized this early on while making the first movie, and as Wan laid out in a recent Nun featurette, the continued success of superhero cinematic universes showed the team that something of this nature would be possible in the long run.