I’m unclear what is it you think is happening by “and so it begins” but to be fair, Avelo completely pulled Nassau as a destination of any type. It was more of a Bahamas issue than an RDU issue. They cancelled plans to begin service there altogether. You can see from their destination map here.
They undoubtedly figured out they can make more profit using that Bahamas-bound aircraft in other ways. These ultra-low-cost-carriers make these last minute changes ALL.THE.TIME. It’s like they throw darts at a map and see what sticks. Frontier and Breeze also do this..
Speaking of which: Breeze just announced nonstop RDU-EYW which is Key West. And so it begins, indeed!
Breeze also just filed to serve what is called “Essential Air Service” for 3 small airports in VA and WV, to RDU. Shenandoah Valley Airport in Staunton/Harrisonburg/Waynesboro, Lewisburg, and Parkersburg. All would be nonstop to RDU, presumably for connections elsewhere. EAS are airports that are so small, airlines won’t fly there unless they are guaranteed a minimum amount of earnings regardless of passenger bookings. The government, in their infinite wisdom 
has decided years ago these small towns MUST have air service even if nobody wants it.
Just like Nassau, you can count on at least a few of these Breeze routes not lasting 90 days, or possibly some never actually beginning at all. Not the EAS routes. other airlines are competing for the EAS service, flying from those 3 airports to different proposed connecting cities, not RDU. Decision to be made “soon.”
