I thought the Argies could run proper top cover ( they were using Mirages for shipping strikes in addition to their SuEs and A-4s), just chose for the small flight low level penetration mission to avoid the Shars and ship based AAW (Sea Dart).
As it is, this ship will probably not need to operate outside the protective CAP provided by the Turkish AF. So it’s a focus on the ships assault capabilities. Of course having some F-35s on board for nearby/quick turnaround CAS wouldn’t hurt, with land based fighters providing top cover.
IIRC the Mirages didn’t have the fuel to get into fights with the Harriers and so wouldnt. They could do shipping strike with the range,but unescorted.