The key design tension is whether the main space should be the asset you are working on or the work being delegated.

For a lot of tasks, I don’t think you will need to stay inside the document or app the whole time. But I can also imagine starting from an asset you already have open ie a PDF, spreadsheet, etc and bringing agents and tools into that context, rather than creating a separate task and attaching the asset again.

With that in mind, I agree that fanning out into disconnected task outputs is not enough. Sometimes the asset itself should become the center of the workspace, with the delegated work happening around it.

"Sometimes the asset itself should become the center of the workspace, with the delegated work happening around it."

Arguably always, for anything details-oriented. You can get away with coding from TUI, but video editing etc? Hell no