Thanks for the answer Winder!
As a matter of fact I'm not missing real 3d trees, may be a little variation in color or some height difference variation to the current ones will well do the job.
Also I think that that dark "forest" texture, where trees are posted on in P3, really helps to blend them better to the surrounding environment...
I know that everything is still WiP and IMO the P3 terrain-environment, is the most immersive I've ever seen in a flight sim,
(almost haunting in a cloudy day over no man's land), but WiPs are open to discussion and meant to be discussed, isn't it?
Anyway, I think you are doing an outstanding job with P4 so far, thanks!