Gimmick doors that will fail. I would never buy an X.
Last night my wife and I were driving in our P85D and a Model X pulled up alongside us. My wife looked at it and asked me "are those much more expensive than the Model S?" My response was "they are roughly the same price for similar specs, but they have those stupid rear doors." She didn't realize that the doors, which she hates, were not optional.
My wife asked me if the X could be ordered with regular doors. I told her no. She said "forget it then."
I'm sure there are some people who like the gimmick wing doors, but I also am sure that there are a lot of people like us who would never buy a car simply because we don't want the likely headaches associated with those doors.
And then I reminded my wife that the replacement for our P85D will be an F350 diesel with Montana plates...