The design objective was to make a high tier tool that felt valuable as it would take some good time and effort to create. Adding in the feature of a D&D made sense, but we went back and forth of "is this the right thing to do if it's not reworked"
If we didn't add it as a step, it'd be too short of a grind, and there's not too much else we could plug in to that felt appropriate. But we also wouldn't be able to add it later once it does get a rework because that would be weird - do you see the dilemma?
Another objective of the creation process was to make something that could be adapted to other skills, e.g. the tier 100 Woodcutting hatchet that will come with 110 Woodcutting & Fletching - in the same way that the process is standard for T90/99 tools of smashing Imcando + Crystal together. So you can imagine that one incorporating the Evil Tree in place of the Shooting Star.
RE: Wildy star, yeah good shout, we can discuss adding it to that for sure.