Location based reminders
Please add location based reminders like Any. do, Toodledo and Remeber the milk.
It is the only feature I am missing before I can extend my pro subscription and move my tasks from RTM.
Also, geofencing please :-)
That's absolutely necessary to my mind. With "astrid" I could use a locale plugin that was working in quite a good way. Even tasks apps that are much featureless than ToDoIst (like TickTick) are able to use location based reminders/alerts.
Please consider developing something like this. :)