Recurrent last year they said IF (and it was a big IF) there were a 190 base opened in FLL, it would be pulling from the northern bases. When I left JFK, it was pretty obvious the 190 was shrinking up there. Fewer openings every system bid, and the lines were more or less to the same 4 or 5 places like SYR, BUF and the rest of the "shuttle" ops. Wouldn't be surprised to see 4 leg days a common thing out of JFK in a bit.
Plus, if they closed the MCO 190 base, the training department would burn down the building. Way harder to buy people off trips up in JFK or BOS......