I would like to optionally select a parent thought and in the content area of that thought TheBrain would show of "composed" view of all the notes from the parent's children. So if thought A has children A1, A2, and A3, with A1 and A3 having content (text, embedded images, diagrams, transcluded thought, etc.) but A2 has none, then the note area of the A's content display would display, in thought order, the contents of A1 and A3. If I manually reorganized the children to the order A2, A3, A1, then the content area of A would also be rearranged. There probably should be some display-only hints in the content area of the parent note that indicate the thought name of whatever children are displalyed.

Other issues: how deep in the child hierarchy should this composed view go? Probably just one level. Should the content of a child be a composed view of its children? Interesting, but not sure. Should we be able to toggle "include this child" on or off -- yes? Should this feature also apply to the thoughts in a selection -- interesting but maybe really complex.