I believe that the Intruder left service between 1994 and 1996. Unfortunately, no direct replacement has ever gotten to the carrier deck. The F-14 picked up the heavy bombing mission and does a heck of a job, but has stretched the air crews to the edge. The A-12 was supposed to replace the A-6 but was cancelled. The A-6F and A-6G were also cancelled as replacements to the A-6E in the late 80s and 90s.
"History does not long entrust the care of freedom to the weak or timid." D. Eisenhower