First off, Kit's living situation was fucked up. He must have been mentally ill to be living like that with those two wives of his. He should have been thrown back into Briarcliff just for that.
This episode was so vague and distant and uninteresting.
WHY was Frances Conroy a patient in Briarcliff this time?? There is a LIMIT to the liberties you can take with the show. If you are not able to tie the story together well, let it go. DON'T try to pass it off as a great ending/episode by making some poetically-perfect-everybody-takes-away-something-different-from-it-spiritually type of ending by making it vague and disconnected. THAT IS NOT GOOD WRITING. THAT IS A COP OUT.