BA mainline at Gatwick should have been rolled into CFE and left as an independent franchise run by its own management. At the very least that would have given BA an extensive LGW network at no cost to itself and with some revenue and franchise fee benefits.
Seems Big Rod now sees LGW as the sinking ship it is and fancies doing as you said skylion. Instead of CFE though its GB that are gonna get dumped on to try and make LGW a success even if it means turning GB from a profit making airline to a loss maker !
Done it before so why change a habit of shafting small independent PROFIT making airlines ???