DL/VS next move at MAN
My guess is that when VS take over the JFK route, DL will switch to Detroit.
I think VS will try LAX in the near future (subject to general market conditions of course). I don't know whether it will take an extra based aircraft to make that happen but I imagine so.
They may have to move quickly as TCX are supposedly doing well on the route and wish to increase frequency and Norwegian seem likely to want to enter that market when they set up their long haul base at MAN.