IMO seeing pretty puffs or clouds,smoke,debri ect is not worth the buzz kill of getting staggers or pauses at the most crucial and most exciting part of the sim. Right when you are strafing or bombing at target, BAM.... Pauses,stutters, all for the sake of some eye candy.
Nah let the modders take care of it and load the extra textures if you want them.
I remember Lomac was bought to its knees by all the fluff,flares and smoke.
You can always add all that crap later but getting rid of it or waiting a year or 2 for the next super computer to run it is not the way to go.
Concentrate on getting the core game optimized before strangling it.