I have about 1/3 of the story (1 per chapter, no extra points) and did not do any of the adventures. I have most of the insights/strongboxes in VB
and AB, none in TD, and got 1 in DS by accident. A few others for various achievements, but there are still achieves I have not done yet.
Assuming I am getting Speed or Nuhoch language I might go for Nuhoch. It is not like those mushrooms are everywhere and I am currently maining a herald (unless it goes faster than that). I do not get a lot of keys from TD to matter but a home instance node is a home instance node.
Is ley line gliding useful? I heard it was pretty meh.