the problem I have with task managers [as opposed to reminders, a blur at times]:
they aren’t where the work is. at least in my world.
if I’m in a task manager minding the tasks, then moving to other apps to do the actual work, sooner or later the task manager will wither and ultimately die from lack of attention.
I can make a great outline of events in a managing app, only to leave it once I get started.