This is an interesting post in all ramifications. While I believe efforts should be made to conserve biodiversity, returning the island to the pre-exploitation era is extreme, and may even boomerang in the medium to long run. Without exploitation, we really don't expect that the island will remain the same between that time and now.
Should this be a model for reclaiming biodiversity? I will not say yes or no out rightly. However, this could provide insight into how to reclaim forests and biodiversity.