I think the routes should be done very well. Maybe F9 will have consider to start nonstop DEN-NAS/FPO/KIN/SJU. It will have a easier way flying long-distance aircraft without payload weight restrictions. I think F9 will bring A319 aircraft to have enough more range to reaches into Caribbean. Lets wait to see from DOT authority to be approval sometimes in the future.
Nasasu is very popular in Caribbean. I think there is lots of leisure vacation traveler to Nassau/Paradise Island, Bahamas has lots of the resort hotel and casino, too. I think it should have to start own metal nonstop from DEN-NAS is a easier way to get there.