I find it helpful while working on the plot using the plot board, to keep notes as a go along. I write down ideas for future scenes, potential callbacks, and bits of dialogue. It would be nice to be able to keep notes on the screen at all times just like Story Elements.
Currently, I add an Act, call it Notes, then add a Beat and name it To-Do.
Would love a ‘global’ To-Do list to capture high-level reminders / to dos. These are distinct from comments / notes as the latter are often related to specific elements within the story, whereas to-dos / reminders might focus on very general issues (e.g. ‘incorporate research details into Plot Board’ or ‘Finish key character list’). Having a To-Do list would be extremely helpful.