Trees are just another step in the direction of realism. Since they're going to be fixed around airfields, keep em in. Eventually I hope they add more and make actual forests, but for now this is a nice start, since we don't want to kill everyone's frame rate just yet.
One thing that has to be fixed: I was driving my M8 towards some sheep and I ran into one. Yes, it killed me. The M-8 flipped. Making the ground objects destroyable would be good. Trees would be tough wtihout bullets, but small bushes and sheep should be "plowable" with a ground vehicle.
CJ