[whpalmer4]

A "Next Action OR Flagged" view doesn't make a whole lot of sense. Why do you want to include actions which are flagged but not next actions in a view with your next actions? A view of "Next Action AND Flagged" makes a lot of sense — anything that isn't a next action is something that can't be worked on yet (*), and a flagged next action is one you've marked as being especially urgent, important, deserving, whatever meaning you assign to flagging.

(*) A parallel project can have multiple actions available to be worked, with only one of them (the uppermost) being shown as a next action, so it is possible to have a flagged item which is available but not yet a next action. However, with a sequential project, including any flagged actions which were not next actions in your proposed view would show you actions which you should not be doing.