Is constant juggling of multiple agents productive? I haven't seen the allure (except maybe with 2 agents sometimes). I guess it depends on what kind of tasks one is doing and I can imagine it working if doing large, long-running tasks, but then reviewing those large changes and refactoring becomes more difficult. And if you're juggling multiple agents, there's the mental context switching and tooling overhead for managing them. Maybe predictable and repetitive tasks can work well.

I prefer focusing mostly on 1 task at a time (sometimes 2 for a short time, or asking other agent some questions simultaneously) and doing the task in chunks so it doesn't take much time until you have something to review. Then I review it, maybe ask for some refactoring and let it continue to the next step (maybe let it continue a bit before finishing review if feeling confident about the code). It's easier to review smaller self-contained chunks and easier to refer to code and tell AI what needs changing because of fewer amount of relevant lines.