Mudge--
Indeed, an interesting poser!
Korea: P-80s, F-84s, F2Hs, you're right: none flying. But your mention of Mustangs is the tip of that particular iceberg...Many Mustangs, many of the surviving later mark Corsairs, several Skyraiders, and several A-26s wear Korea-period finish; and of course there are the F-86s and MiG/Lim series. Might be a Panther out there still too? The C-54 currently featured on another thread commemorates the Berlin Airlift...but there was a Korean Airlift too. There are at least a couple Texans flying in LT-6G "Mosquito" livery. And any number of postwar L-birds about. Beyond that, and this'd be my favourite aspect

, there are the RN/RAN types that saw action over Korea--Sea Furies and Fireflies. Some of each are available in North America too.
Vietnam: This has indeed been done already to an extent at a number of airshows; and notably there's the group in Minnesota who have the collection of OV-1 Mohawks; there's the Beaver Falls outfit in PA with their C-123 and OV-1s; and there's a group in Georgia with a C-7A Caribou and several helicopters...Add in some O-1s and O-2s, some "Sandy"-liveried Skyraiders, a couple A-4s and MiG-17s, a Herc, and a Phantom or two (they're around...) and of course a flyover appearance by a still-operational B-52, and you have the makings of a fine Vietnam tribute, especially if your venue possesses, say, an A-6 and an F-105 on static.
Either one sounds like a superb lineup. How 'bout it?
S.