Eye candy? There is no change at all to textures, models, effects, or anything typically associated with that term. The increased FOV is a functional difference and makes only one significant change: allowing more time to be spent controlling units and core gameplay mechanics by greatly reducing the need to manipulate the camera. With a multi-mon FOV such as the one I posted above, I could build an entire base without moving the camera a single time if I wanted. That is simply not possible with the single-screen, restricted FOV.
I, too, play a number of older games. In fact the screenshots are from BFME2, which is certainly not a new game. Zero Hour is an even older RTS I still play, and
now I play that in surround as well. Extremely low camera angles is something that I strongly dislike in RTS games. Thus I've attempted to modify/correct the issue wherever I can.