In terms of the VS JFK, it means weekly seats doesn't take a huge hit, but frequency does take the hit.
The big hit comes to ATL, which has its frequency halved but same aircraft, so, the W17 figures for that route will be dire compared to W16.
As said, we now have a situation where we have more flights to Houston than one of our longest standing routes, ATL. A bizzare situation to find ourselves in really.