Given that the aircraft will be pooled, ie a 'wing concept', it is rather a semantical notion to talk about number of aircraft per Sqn. Fact is that there will be 2 Naval Air Squadrons operating GR7a/9a, dark blue heavy, who will be the prinicipal carrier Sqns, however, if conflict loomed then you would embark those with the necessitated qualifications, ie 'x' pilots who are CofC, 'x' who are INQ and 'x' who are FNQ off the boat for example.
And the issue of constraining careers, what nonsense, an RN Sqn could have a QFI or QWI who is light blue and vice versa, just because 1 Wg Cdr post goes the world does not end. The nitty gritty will be do the 2 Naval Air Squadrons keep there traditional structure, ie SP/QWI/Ops etc.... or adopt the light blue Flight structure??
And as for:
"will give the RN a disproportionate influence and 'apparent' presence within JFH."
Hence the word Joint. Plus the 'dark blue' presence on the JCA Team is in parity with that of the light blue community.......