My tree navigator reputation is slowly growing:

Treebeard tells you 'Your tree herding knowledge has improved and you can now herd 1 additional tree. Good work!'

I spent the new free slot to a tree to Jungle cave area in Furnachia. Money-wise, there might have been better locations in Laenor or other continents, but I occasionally want to visit Jungle cave area or nearby outworld locations and it has been annoying to walk there.

The link to the jungle cave is from my Rilynttar ferry tree. You can see all my trees from my treenav page.