As long as they're not cutting down the "clump of trees", i'm ok with restoring the battlefield to it's 1863 status.
There are some areas of the battlefield that was open ground in 1863 that are now dense forests. It's impossible to imagine what went on there as it stands today. I'm all for cutting down excess trees where they have overgrown battlefields. Did Pickett's charge occur in a forest or across an open field?