look well at all this finest details in this Pic's ... incredible, really realistic 3D, and even it can move as real !
(rotate, go Up and down, open/close the door, open/close the fan's windows ...and with finest realistic shadow !

)
isn't really finest realistic made and so beautiful !
is that what you are asking for
Redcoalition ?
THIS MODELS'RE GREAT! Ok, they're "a bit" expensive (the SA-2 Battalion just $650 :D) but still...
It'd be great, but i think that would be pretty hard to implement a 3D engine on SAM Simulator. First because I think that, for exemple, the simulation of objects in the game are "point" simulations. I think (again, not sure) that Hpasp didn't programmed the dimentions for missiles because there's no need for it on the current simulator. But with a 3D engine it would be necessary to implement behavior according to object dimention (for angular momentum, etc), I think that, to have a realistic 3D SAM Simulator would demand a nice work on programming.
If he use a existent engine of some sort of simulator, he'd have to do a complete convertion of all the physics parameters of the game engine, because most of simulator's ballistic simulation isn't complete as the one in SAM Simulator. Then he would have to do animation programming, model behavior, etc, etc... It'd be pretty hard I guess... If, at least, he earn money for that...
But he don't, so I can live without 3D environment.
But the models are really great! If he mananged to do that, would be awesome, but what i really wanted was a SIM with all functions and positions on real SAM Battery. On Acquisition Radar, on Comunications Officer, etc... THAT would be great also..