3-D is probably not such a difficult thing to achieve, these day. As to it's usefulness, it's fluff/eye candy. That said, if done right, it could generate massive sales, by bringing visually-oriented novices into the game. Particularly in a head to head environment. My brother, (USAF Tsgt. Flying crew-chief on SPECOPS -130s, nearly retired) and I discuss my scenarios for hours on end. But unless there is some sort of visual component for instant gratification, he's uninterested in actually playing it. Army-types are probably even less inclined to play this game, because outside of FBCB2, the ground pounders don't have as much appreciation for the top-down picture that is so common for us NTDS-experienced types. But when you consider games like DCS: Combined Arms, ( http://www.digitalcombatsimulator.com/en/products/combined_arms/index.php ) and Wargame AirLand Battle, ( www.wargame-rd.com/en/game-ab.html ) the possibilites to ensnare new player ( and market-share) are hugely expanded. I lack the programming knowledge, and the artistic skills required to produce something like that, but I believe that it's almost plug and play with open source engines like Python, these days. I expect it would require some people to upgrade to more powerful systems, though it seems logical to be able to turn the 3-D stuff off, for less GPU-intensive gameplay.
Honestly, I love the game as an uber-realistic NTDS simulator, and will for a very long time- but I wouldn't hate being able to see my fighters and bombers blowing the crap out of 3-d ships in Google maps. Try not to flame me, but I am a "cake and eat it too" sort of fellow.
Though surrounded by a great number of enemies
View them as a single foe
And so fight on!