Another feature I've found lacking is that most todo / project management systems are all based around "work hours", and the assumption that you can count on ev

Another feature I've found lacking is that most todo / project management systems are all based around "work hours", and the assumption that you can count on every resource reliably putting in 40 hours per week. Personal projects look nothing like that. This week I might have 2 hours for it, next week maybe zero hours.