The loss of frequency on JFK and ATL make the route pretty much pointless for any business customer. The should go back to DL operating a daily 752 to JFK an VS operating a 6x weekly service to ATL. 4-5x weekly is the minimum frequency for business travellers. 3x weekly makes the rout redundant. With the transfer market growing this is the worse time possible for these frequency reductions.
In the summer there are up to 5x daily flights to JFK. This winter there will be some days with 0. Shocking.