I know this is a bit of an old "chestnut" but it still seems to me that if OF had a less rigid view of action groups vs actions you'd have a simpler and more elegant solution. I'm thinking of the Life Balance approach where a "parent" action whose child items have all been completed behaves as an ordinary action reappearing on to-do lists. You then are automatically prompted to either mark it as complete or add further subtasks. I make use of Curt's "Missing Actions" AppleScript (
http://www.rose-hulman.edu/~clifton/software.html) daily but it seems a bit of an indictment of OF that this bolt-on is needed to make it workable. The most elegant way of adding this functionality to OF would in my mind make the switch from action to action group fully and seamlessly reversible