[Gracana]

The first few bullet points (regarding job control / status / blocking) sound interesting and useful for anyone. I think it would be cool to have a shell with some sort of visual job control system and an easy way to background anything that was taking significant time. Maybe that wouldn't be as deeply integrated as the system the author is describing, but it would probably be easier to implement and less of a change from a standard shell. These days I hardly ever suspend a process and continue it in the background because it's easier to spawn a new shell, but if that workflow were streamlined... maybe I wouldn't need a dozen shells open all the time.

As for the rest, I dunno. Neat, but complex solutions like this make me pause. Maybe instead of trying to solve this problem, we should instead try to not have this problem. That is, if your tools require this much of your shell, maybe the tools are the problem and not the shell?