I think it would be useful to be able to sort all of the tasks by alpha in the sidebar, and change their order in the actual file. I know I could simply jump to a project, but there is some utility in seeing the “big list” organized by alpha - easier to find the project you want (I know, you could search for it…).
Really liking all versions of TaskPaper - text rules! Preview really showing the improved but not radically changed nature of TaskPaper 3. Combined with an iOS-compatible task list app it’s a powerful, light, task management solution.