Same for me. I never use them. I use Fable on highest effort to plan things and then record the plan in tickets. I use Kata, which is CLI and agent oriented, but I suppose Jira or other systems would work too. I tell it to put enough context in each ticket to on-board a fresh coding agent to implement it. Then I just do /goal, telling to to run `kata ready` to get new tickets to work and continue until they're all closed according to acceptance criteria or until they're blocked on actions from me. I need to play around with getting it to switch to smaller models (or spawning 1 subagent) to do ticket implementation and then auto compact after each. Either way, it results in really easy workflows and uses very few tokens compared to the built in subagent flows that doing this completely avoids.
Very interesting approach. Thanks for sharing.