It’s been a few weeks, and the wood base microcarpa seems to be thriving. All of the rooted cuttings seem well despite being nailed to the wooden base and whatever trauma that might have caused.
I’m propagating some more cuttings (from the same donor tree) in order to fill the gaps. I am also planning on a couple more “trees” using this method, but with ficus burtt-davyi and ficus salicifolia. I’ve taken cuttings of those as well as seen below.