Here's a fun F-14 'what if' forum thread.
http://www.phpbbplanet.com/shipyard/...forum=shipyard
(This is what Ace combat znd JASF should do instead of just throwing in the old retired F14D each new game)
The Russians have shown with the Su27 that if you have a great basic aircraft you can modify it in many different ways to suit different roles and keep it at the cutting edge of fighter design. A completely new aircraft design isn't always needed. The F-14 wasn't stealthy but would have been modified to make it less observable on radar.
The same thing happened to the Blackburn Buccaneer and it's replacement Panavia Tornado. In many ways the Buccaneer was the better aircraft.