[philip.ed]

+1 to this, well thought out and well said Kendo.

Notice, as well, how in photos of the English landscape, the tree-trunks are barely visible, if visible at all.
Also, the colour of the foliage gets a lot darker at distance or altitude, but there is a distinctive burnished look to the foliage, which looks almost murky. I'm not sure what season this may appear in.
Similarly, rather than trees, thick (neat) hedgerows are needed as well; probably in preference to trees in most cases....I think this is possible.
Some screenshots of CoD, currently, show a lot of trees, but as you say Kendo, they are placed almost randomly, and this makes the landscape look rather messy.
A lot of these trees could be cut down (scuse the pun) and replaced by hedges, bushes, or thick foliage.
As a user has said before in another topic, in a lot of cases, the bushes grow into trees, and this transition can be seen in photos of England, making the bushes/hedges look like they have grown denser over the years.