A naval Eagle was proposed by MDD in the early 70's, with the F-14's AWG-9/Phoenix missile system.
Soren-a gave the reasons why it was undesriable, and the USN were commited to F-14's.
The naval version of the ATF programme, which led to the F-22, was dropped at an early stage of the progamme.
Costs probably, at the time the USN were expecting to get lots of F-14D's, and further developed Tomcat 21's to follow.
Now the USN's mission has changed, the threat from squadrons of cruise-missile armed Soviet Naval Aviation bombers has gone. So a direct replacement for the F-14 has different requirements.
Around half of a US carriers F-18E aircraft will be two-seaters, as well as having advantages for strike missions in a high-threat ECM-heavy mission, it will take over the fleet defence role.
Most of them will have a new electrically-scanned radar to replace the early APG-73 sets inherited from the F-18C/D's.
They can carry a heavy AMRAAM load, not a direct replacement for the F-14's Phoenix missiles, as I said the extreme-range part of that missiles mission has gone.
The single-seat F-18E will be almost as capable for the air-defence mission, many don't like the F-18E, and mourn the loss of the F-14, but reliability, cost and flexability are the watchwords today, and USN has a lot of ageing aircraft to replace.
The F-22N would be costly and take a long time to reach the squardrons, it may have been desirable not to have dropped the NATF, a few on a carrier would greatly enhance the USN's 'first day of the war' air superiority capability, but the chance was lost.