Original sentence: Dogged by complaints that the F-18 lacked "legs" or range, the Navy later opted for the F/A-18E/F to replace the A-12 Avenger, which in  turn was meant to replace the A-6 Intruder
Edited sentence: Dogged by complaints that the F-18 lacked "legs" or range, the Navy later opted for a growth of the F-18, the F/A-18E/F Super Hornet to replace the A-12 Avenger, which in  turn was meant to replace the A-6 Intruder.Since they share many systems, this will be quite an improvement over the logistics nightmare that many wrote of in the 1960s.The JSF is being anticipated as next great lightweight multi-service fighter, and the Eagle is being slated for replacement by the hugely expensive F-22 Raptor, but it may be noted that the Super Hornet, VFAX plus appears to be an aircraft which, other than considerations of complete performance coverage and cost, could be adapted to most fighter missions  of all flying services like the legendary Phantom