It would be great if specific lists could be included as the Filter Criteria when setting up Custom filters.

As an example of what this would be great for - I am using a Workaround for separating actionable tasks from non-actionable tasks in Projects, using Low Priority (see http://help.doit.im/group/topic/80 ). If I could include the NEXT list as a Filter criteria, I would be able to create a filtered Next list only, without e.g. scheduled tasks, that I do not want to see necessarily (I know, I could use Low Priority for all these too, but then it really gets messy)