F-14D. Once they are able to get the two pilot system going of course. Give Joey a Buccaneer so he will stop complaining (jk <3) and the world will be happy. The A-6 / EA-6 has been a favorite of mine. She is a beauty and would be great to fly with CAS. But again the multi-pilot system would have to be created.
Contrary to what others say Carrier Ops have to be made. ED would be able to help out the people still playing Janes F-18, add another epic part to DCS and give us the Tomcat. She won't fly again except under the Iranian flag but virtually it would be a dream. The F-18 would be perfect for its multi-role capability and overall popularity. But Data on the F-18 would be difficult but not impossible. As for the F-14 you could find a few over at Fightertown that are set up I think (other places also). You can google and find millions of pictures of the cockpits + a few walk-around books (of course I own them :P),ect.