Absolutely nothing. It will get overgrown with brush and will be roadless and a few years from now it will burn and cost millions to control. A few masochistic hikers might hike on it and maybe a horseback rider or two but basically it will sit there doing nothing. There will be no taxes paid on because there will be no taxable activities on it so the gooberment will send “payment in lieu of taxes” to the counties and we will all pay for it.
We need to emulate mid 1700’s France after CW 2, heads will roll.
As an illegal alien criminal, my vote is to grow pot on it, and maybe run a few meth labs too.