I guess multiple stories would be better than just packing more people into this house who want to steal babies. But if that's the idea, they did a really piss-poor job of executing it in season 1.
This "story" would be about the original doctor, the women he treated/abused/whatever and the doctor's descent into madness with the Frankenbaby. Everybody else is reacting to that ... except of course for things like the nurses that were murdered, which as far as we know is just an unrelated murder in the house (I think).
So what did we ever really find out about Frankenbaby, the women in the house and all that? What we ended up with was this stupid soap opera about ghosts and their relationships with each other, broad themes about what it means to be a ghost, this apparently universal desire as a ghost to still have a baby and all that garbage. Then the climax is a real-world baby spawned by a ghost and a live person is kind of evil and decent ghosts in the house want to break the cycle of death there.
Stupid.