Sad to say but many folks here who think they may have an idea that hasn't been raised in the 3+ years of the life of this game could be grievously mistaken.
This is true with the title of this thread
"Destructible Environment".
In the upper right area of the forums is a white box that has a magnifying glass next to it, it's a forums search function. Typing key words into this and hitting enter will provide the user with a plethora of existing topics on the given subject.
As you can see from my link above, just typing the word "destructible" brought up comments from the developers breaching this topic.