I suspect the RN hierarchy will be 'quick' to pass control of all FW to the RAF so that such budgetary pressures will be 'forced' upon the light blue pot
Given that the RN will soon have at least 3 x 3* FAA admirals and has about 5 x 2* FAA admirals and that the next First Sea Lord is likely to be FAA (and is a potential CDS), I wouldn't make any assumptions about the future direction of the FAA and its aircraft!!
And given the tainted sate of the current RAF heirachy v-a-v the current politicians, I wouldn't make any assumptions about the future direction of the RAF and its aircraft.