Tim,
Perhaps you can begin to understand the lack of fondness for trees as design elements, from the responses so far. What it boils down to is that courses that need to plant trees and grow long rough are hiding or attempting to hide, their inherent flaws.
I'm not the anti-tree preacher some on here are, and believe that occasional use of trees is an acceptable practice. But if we view it as a breaking of a design rule, then it is sure to be limited.
On courses without those flaws, yet have had those weak elements forced upon them, removing them can open up, not only the air for circulation, but the creativity of the golfers. Who, BTW,will now get to decide how, likely reducing the how many.= more fun.