We have not 1 but 2 RAF's - One for the navy and one for the Army
Now what would we call these air forces? I know, how about the Royal Flying Corps and the Royal Naval Air Service
And who would decide which personnel were assimilated into which service? Whilst I have a lot of admiration for both the AAC and FAA crews, I have to say I'd rather go and work for Richard Branson's air force than the army or navy. Most people join the RAF because of the 3 services, that is the one that lets them do the job they want, but also because the air force ethos and way of doing things appeals more than the army or navy's. Any forced assimilation would only lead to an even bigger flood of people heading towards the exit.