The RAF appears to be saying, that it can (or is prepared to) now do everything required of it (FW FJ wise) with GR4 or FGR4 (tee hee- are we still calling it that? ). CVS is the gaping hole in its otherwise perfect argument. Therefore JFH has probably survived due to CVS. To cut the force to a level commensurate with CVS Ops isn't overdue, as anything you can do from CVS you can do elsewhere, in some cases using support and surfaces that GR4/FGR4 cannot hope to.
I've said it before, but anyway...A RAF organised into Expeditionary Air Wings, forged by a COIN war...favouring the two platforms that aren't ideal for either.