I guess it is a ressources issue and graphic engines are probably not their forte either.
What I would love in the extreme would be an engine on par with the "Just Cause 2" engine. Their engine is superb, not too taxing for the computer ressource and perfectly fit for a flight simulator. It deals very well with distance changes. I mean your computer doesn't go apeshit whether you are close to the ground or high in the sky and in both cases it is very good looking.
I actualy would love to be able to fly the DCS's helicopters on the "just cause 2"'s map. If only someone could fuse the 2 :bounce:.