Returned from MCO on Saturday - no lines at check-in or security. Had to change terminals at JFK and go thru security again, also no lines.
It seems most airlines are using the bag-match which should be fairly easy provided everyone who checks a bag gets on the plane. I did hear a few announcements in MCO pleading for a certain few passangers to get to their gate as the plane was waiting - maybe to avoid having to find their bags in the cargo hold!