I love Jessica as much as the next guy, but this doesn't bother me. I think she had a good run and really helped AHS take flight. However, I think the show is strong enough to succeed on it's on merits as long as the cast remains talented and the stories fun and morbid.
I've seen a few people already promise that her depature is a deal beaker. Is thare any AHS fans who will leave the fanbase along Jessica when that day comes?