I think I see the tree dancers for their sense of movement, and that I absolutely love about them.
The sessile to me reminds me of the wizened faces in the tree who watch and see everything, but have no human tendencies. They are as ageless as time... like the Ents from the LOTR lore. I think that they could definitely be fully developed in their own right in the Green man way you suggest. But if you think about your title - wonder and whimsy - where is the wonder or whimsy inside the sessile? Compared to your other body of work they seem to stand very much apart. In the scene but on an entirely different plane, and not really connectable.
I don't know if I am making any sense to you.. but your OP does make sense to me.
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Calling from deep in the heart, from where the eyes can't see and the ears can't hear, from where the mountain trails end and only love can go... ~~~ Three Rivers Hare Krishna
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