Well, if the move for officer training must remove all traces of previous establishments, then why not Milton-Keynes? great rail links, kind of east-central and with few prior incarnations of military dogma to confound the winds of change.
As for flying pay, why not make it a perk for the days when flying actually takes place?
As for ground trades, if there are further reductions, it may be found that certain trades may react unfavourably... PSF might close not just Wednesday afternoon... The flightline may be closed every Thursday afternoon, for groundcrew training... Last minute changes to flight plans or map requests will incur a surcharge... Miracles may cease to be performed at Role change time... And we will most definitely be calling aircrew in from home, to sign the aircraft back in, or to assist with their loose articles...