I think I'm more on your side on that rather than letting agents go wild like Steve Yegge/Pete Steinberger do. In fact OrcaBot quickly adapted into a knee jerk reaction to OpenClaw because I saw that as inherently dangerous.
But with regard to Juggler and orchestration, have you seen "claude agents" (started in the terminal as claude agents instead of just claude). I ask because your tree like approach has similarities to how claude agents manages claude agents/subagents doing tasks with the ability to drill down in to each at a time which is why for me its not such a leap from what you already have.
I think that's basically the same as juggler's subthreads. As it progresses I'll work my way through all these kinds of thing and dig into whether there are things I can add or tweak to match their features. I'm aiming to make juggler's extension API flexible enough to support pretty much anything