I think so
also
this JM, with time was my general impression of the new features added with each title of the SF2 series NA aside (ohh the manpower and resources put into totally wasted "new" terrain engine development! Ohh I can soo imagine The Guy with his Windows notepad opened typing x,y position values for each and every terrain LOD piece as he goes along, unchecking every single of these from a printed list lying next to his monitor as he progresses throught the cold long night like it's 1991. Totally not a pun TW guys! Totally! )
having now also the very first install of Wings over Vietnam, pre-patched out of the box, 2004 edition I notice how much stuff apparently was in the code just "unlocked" as the new titles were coming
you old timers do know that that particular old WoV has statements for ie. clouds shadows still left there, don't you? plus correctly rendered gunsights etc