My money is on by the time T5 is up & running at LHR:
Gib air will no longer be a BA franchise.
Any other fringe franchise also disenfranchised, so to speak.
BA LGW will go , long haul to LHR, short/med haul probably offered to Gib Air ( a la Flybe)
BA in effect becomes BOAC ( or London Airways) operating long haul with euro & regional connecting flights to long haul from T5.
I have no factual information for the above, but seems to me, a very plausable WW plan.
