The "plan" such as it is, reflects it's authors rather than what the ship is capable of. There is currently a b8ggers muddle called Carrier Enabled Power Projection that seeks to have 12 F35, half a dozen Chinook, some Merlin and possibly some rotary-bag and even AH64 all embarked together.
The idea is (correctly) to demonstrate the flexibility the (large) ship brings. However, it does not mean that is only what the CAG should look like. For example, were we ever to go up against a remotely credible air force, (naval or land based) then you'd want more jets and less Wokka.
However, these "plans" are only assumptions, a bit like FE@R, they can change. What you have to make sure is that the baseline enabling capability (the ship) is flexible enough to do all (or most) the things you want to do now and in the future. That means cat n trap....