[GeoffAirey]

I don't know Superfocus, but from what you've described, OF doesn't have the ability to do that.

My first thought is to use contexts for your 'lists' and set all tasks to repeat once a week with a start date and finish date of today, when you then complete the task, it will 'disappear' and a new one will be created to start in a week.

But it may not work to crowbar something into OF

If you use IOS, Evernote and Egretlist may work far better for you as it has tags, so you could prioritise tasks, you can work in Evernote on the desktop or web and egret list on iPad or iPhone/iPod touch