LJ, yes the types you list all have some element of the crew from the NCA cadre (and long may that last!) but, with the demise of MRA4, 55R Sqn have now lost the destination for @65% of their output, as well as the death of the acoustics specialisation.
It may also be worth looking at the Flight Testing forum to see what impact the recent announcements are likely to have on our ability to carry out Flight Test and Development.