CVT have recently recruited more firecrew and Serco, the ATC operators, have recently recruited more controllers which tends to support the idea of longer opening hours and possibly improved RFF cat.
The plans for an Enterprise Zone do not take any airport land, indeed they might even give the airport a bit more to get a better declared distance from the 2008m of tarmac available.
For Atlantic Airlines, CVT could also be cheaper than BHX for parking as they have their own, off apron, parking area.