Ok so we begin this season with two main storylines and loads of characters. The issue is the writers don't know how to introduce it all at once so as a pilot it feels a bit like a failure in the introduction aspect, however it does heavily entice me for what's next. The serial killer story is off to a strong start with some gruesome murders, but there's too many characters tied into one story in turn it leads to a lot of actors getting the short end of the stick. Russel Tovey is a great addition to AHS.and shines as one of our main leads. Now our next storyline is a hidden disease story line that follows predominantly Billie Lourds Hannah, as always Lourd is a treat and it was great to see her taking a main role again after last seasons disappointment. There's a lot of potential for this story arc but I haven't seen enough to fully judge it yet.
In conclusion the ideas, cast and story is there but there's so much the script kind of collapses in on itself. However this issues should hopefully resolve as the story progresses.