FA-XX 'Grey Ghost', intended as a direct replacement for the F-14D Super Tomcat*. This aircraft must be designed primarily as a long range interceptor. A development of the YF-23 would provide the Navy with the correct type of platform in the shape of the FA-23:
A-64A 'Intruder II': A twin engine, conventional take off and landing, two seat, F-111 sized, X-32 winged aircraft acting as an A-6E Intruder replacement:
EA-64A 'Prowler II': The electronic warfare variant of the above.
QR-47B 'UCAV': Unmanned recon and strike drone.
E-2D Hawkeye: AWACs currently in service (upgraded versions).
S-3B/C Viking: New built as a dedicated ASW platform and tanker.
C-3A 'Cargo Viking' (mod) as a COD aircraft (replacing the proposed MV-22).
Helos: Naval variants of the Coaxial Rotor S-97 Raider (see below) and the SB-1 Defiant:
All the fixed wing aircraft outlined here could easily be fielded by the UK's Royal Navy provided they convert their carriers to a catapult system.
*Note that the FA-18 Hornet (not mentioned on this page), although maneuverable, lacked the range of the F-14D when it came to fleet air defence. The FA-23 is intended as a direct replacement for that earlier aircraft. Futhermore, the Hornet was not a direct replacement, in terms of range and payload, for the A-6E Intruder, hence the 'Intruder II' concept inclusion.
The YF-23 Naval Strike Fighter Promo Video: