With so many aircraft carriers available in FSX these days there are still a few tailhook aircraft that would be nice to have. The AM-1 Mauler didn't last long in the fleet but it was a beefy heavy-hauling bird that never got as popular - or as plentiful - as the AD Skyraider. I suspect Tim "Piglet" Conrad or the late Paul Clawson would've eventually come out with a Mauler but if anybody has done one in FS I haven't seen it. FJ-4/4B Fury would be a good addition to FSX as well.
