Well like I said, we are going to be doing most all new vegetation. Crysis Wars doesn't have near the amount of vegetation we need, at all really. I have decent experience in vegetation (some), and we 'know people'. Your pines are nice, but however those are not to super common in areas of Normandy. Those pines would be like, a rare placed tree in comparison to allll those other kinds of trees (to many to name, but you get the point). Unless there is an area done that is specifically a pine forest.
The hedges themselves, are/will be designed so that infantry can pass through them. Remember there are no tanks in first release anyway. We've somewhat discussed destructible walls internally, and its to my knowledge that we are still un-decided on it. We aren't going to make a solid decision on it till we test the hell out of it anyway

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It has to suit realistic combat though, while mainting fairness... but not to fair.

And besides, as Mudra said, tanks/other vehicles couldn't pass through most hedge rows anyway.