Titles, optional brief descriptions, and an absolute minimum of other stuff. Not lots of structured fields. Definitely not custom states and flow-charts. If there's extensively discussion to be had, put that elsewhere. Ideally, e-mail.
I just want a TODO list to glance over occasionally, not a system that can turn into full-time job in its own right.
I just want a TODO list to glance over occasionally, not a system that can turn into full-time job in its own right.